z i m m e r h o l d i n g s , i n c . a n d s u b s i d i a r i e s 2 0 0 2 f o r m 1 0 - k notes to consolidated financial statements ( continued ) rating as of december 31 , 2002 met such requirement . fair value commitments under the credit facility are subject to certain the carrying value of the company 2019s borrowings approxi- fees , including a facility and a utilization fee . mates fair value due to their short-term maturities and uncommitted credit facilities variable interest rates . the company has a $ 26 million uncommitted unsecured 8 . derivative financial instruments revolving line of credit . the purpose of this credit line is to support the working capital needs , letters of credit and the company is exposed to market risk due to changes overdraft needs for the company . the uncommitted credit in currency exchange rates . as a result , the company utilizes agreement contains customary affirmative and negative cove- foreign exchange forward contracts to offset the effect of nants and events of default , none of which are considered exchange rate fluctuations on anticipated foreign currency restrictive to the operation of the business . in addition , this transactions , primarily intercompany sales and purchases uncommitted credit agreement provides for unconditional expected to occur within the next twelve to twenty-four and irrevocable guarantees by the company . in the event the months . the company does not hold financial instruments company 2019s long-term debt ratings by both standard and for trading or speculative purposes . for derivatives which poor 2019s ratings services and moody 2019s investor 2019s service , inc. , qualify as hedges of future cash flows , the effective portion fall below bb- and ba3 , then the company may be required of changes in fair value is temporarily recorded in other to repay all outstanding and contingent obligations . the comprehensive income , then recognized in earnings when company 2019s credit rating as of december 31 , 2002 met such the hedged item affects earnings . the ineffective portion of requirement . this uncommitted credit line matures on a derivative 2019s change in fair value , if any , is reported in july 31 , 2003 . outstanding borrowings under this uncommit- earnings . the net amount recognized in earnings during the ted line of credit as of december 31 , 2002 were $ 0.5 million years ended december 31 , 2002 and 2001 , due to ineffective- with a weighted average interest rate of 6.35 percent . ness and amounts excluded from the assessment of hedge the company also has a $ 15 million uncommitted effectiveness , was not significant . revolving unsecured line of credit . the purpose of this line of the notional amounts of outstanding foreign exchange credit is to support short-term working capital needs of the forward contracts , principally japanese yen and the euro , company . the agreement for this uncommitted unsecured entered into with third parties , at december 31 , 2002 , was line of credit contains customary covenants , none of which $ 252 million . the fair value of derivative instruments recorded are considered restrictive to the operation of the business . in accrued liabilities at december 31 , 2002 , was $ 13.8 million , this uncommitted line matures on july 31 , 2003 . there were or $ 8.5 million net of taxes , which is deferred in other no borrowings under this uncommitted line of credit as of comprehensive income and is expected to be reclassified to december 31 , 2002 . earnings over the next two years , of which , $ 7.7 million , or the company has a $ 20 million uncommitted revolving $ 4.8 million , net of taxes , is expected to be reclassified to unsecured line of credit . the purpose of this line of credit is earnings over the next twelve months . to support short-term working capital needs of the company . the pricing is based upon money market rates . the agree- 9 . capital stock and earnings per share ment for this uncommitted unsecured line of credit contains as discussed in note 14 , all of the shares of company customary covenants , none of which are considered restrictive common stock were distributed at the distribution by the to the operation of the business . this uncommitted line former parent to its stockholders in the form of a dividend matures on july 31 , 2003 . there were no borrowings under of one share of company common stock , and the associated this uncommitted line of credit as of december 31 , 2002 . preferred stock purchase right , for every ten shares of the company was in compliance with all covenants common stock of the former parent . in july 2001 the board under all three of the uncommitted credit facilities as of of directors of the company adopted a rights agreement december 31 , 2002 . the company had no long-term debt intended to have anti-takeover effects . under this agreement as of december 31 , 2002 . one right attaches to each share of company common stock . outstanding debt as of december 31 , 2002 and 2001 , the rights will not become exercisable until the earlier of : consist of the following ( in millions ) : a ) the company learns that a person or group acquired , or 2002 2001 obtained the right to acquire , beneficial ownership of securi- credit facility $ 156.2 $ 358.2 ties representing more than 20 percent of the shares of uncommitted credit facilities 0.5 5.7 company common stock then outstanding , or b ) such date , if any , as may be designated by the board of directorstotal debt $ 156.7 $ 363.9 following the commencement of , or first public disclosure of the company paid $ 13.0 million and $ 4.6 million in an intention to commence , a tender offer or exchange offer interest charges during 2002 and 2001 , respectively. .

2002: credit facility: 156.2
uncommitted credit facilities: 0.5
total debt: 156.7
2001: credit facility: 358.2
uncommitted credit facilities: 5.7
total debt: 363.9

z i m m e r h o l d i n g s , i n c . a n d s u b s i d i a r i e s 2 0 0 2 f o r m 1 0 - k notes to consolidated financial statements ( continued ) rating as of december 31 , 2002 met such requirement . fair value commitments under the credit facility are subject to certain the carrying value of the company 2019s borrowings approxi- fees , including a facility and a utilization fee . mates fair value due to their short-term maturities and uncommitted credit facilities variable interest rates . the company has a $ 26 million uncommitted unsecured 8 . derivative financial instruments revolving line of credit . the purpose of this credit line is to support the working capital needs , letters of credit and the company is exposed to market risk due to changes overdraft needs for the company . the uncommitted credit in currency exchange rates . as a result , the company utilizes agreement contains customary affirmative and negative cove- foreign exchange forward contracts to offset the effect of nants and events of default , none of which are considered exchange rate fluctuations on anticipated foreign currency restrictive to the operation of the business . in addition , this transactions , primarily intercompany sales and purchases uncommitted credit agreement provides for unconditional expected to occur within the next twelve to twenty-four and irrevocable guarantees by the company . in the event the months . the company does not hold financial instruments company 2019s long-term debt ratings by both standard and for trading or speculative purposes . for derivatives which poor 2019s ratings services and moody 2019s investor 2019s service , inc. , qualify as hedges of future cash flows , the effective portion fall below bb- and ba3 , then the company may be required of changes in fair value is temporarily recorded in other to repay all outstanding and contingent obligations . the comprehensive income , then recognized in earnings when company 2019s credit rating as of december 31 , 2002 met such the hedged item affects earnings . the ineffective portion of requirement . this uncommitted credit line matures on a derivative 2019s change in fair value , if any , is reported in july 31 , 2003 . outstanding borrowings under this uncommit- earnings . the net amount recognized in earnings during the ted line of credit as of december 31 , 2002 were $ 0.5 million years ended december 31 , 2002 and 2001 , due to ineffective- with a weighted average interest rate of 6.35 percent . ness and amounts excluded from the assessment of hedge the company also has a $ 15 million uncommitted effectiveness , was not significant . revolving unsecured line of credit . the purpose of this line of the notional amounts of outstanding foreign exchange credit is to support short-term working capital needs of the forward contracts , principally japanese yen and the euro , company . the agreement for this uncommitted unsecured entered into with third parties , at december 31 , 2002 , was line of credit contains customary covenants , none of which $ 252 million . the fair value of derivative instruments recorded are considered restrictive to the operation of the business . in accrued liabilities at december 31 , 2002 , was $ 13.8 million , this uncommitted line matures on july 31 , 2003 . there were or $ 8.5 million net of taxes , which is deferred in other no borrowings under this uncommitted line of credit as of comprehensive income and is expected to be reclassified to december 31 , 2002 . earnings over the next two years , of which , $ 7.7 million , or the company has a $ 20 million uncommitted revolving $ 4.8 million , net of taxes , is expected to be reclassified to unsecured line of credit . the purpose of this line of credit is earnings over the next twelve months . to support short-term working capital needs of the company . the pricing is based upon money market rates . the agree- 9 . capital stock and earnings per share ment for this uncommitted unsecured line of credit contains as discussed in note 14 , all of the shares of company customary covenants , none of which are considered restrictive common stock were distributed at the distribution by the to the operation of the business . this uncommitted line former parent to its stockholders in the form of a dividend matures on july 31 , 2003 . there were no borrowings under of one share of company common stock , and the associated this uncommitted line of credit as of december 31 , 2002 . preferred stock purchase right , for every ten shares of the company was in compliance with all covenants common stock of the former parent . in july 2001 the board under all three of the uncommitted credit facilities as of of directors of the company adopted a rights agreement december 31 , 2002 . the company had no long-term debt intended to have anti-takeover effects . under this agreement as of december 31 , 2002 . one right attaches to each share of company common stock . outstanding debt as of december 31 , 2002 and 2001 , the rights will not become exercisable until the earlier of : consist of the following ( in millions ) : a ) the company learns that a person or group acquired , or 2002 2001 obtained the right to acquire , beneficial ownership of securi- credit facility $ 156.2 $ 358.2 ties representing more than 20 percent of the shares of uncommitted credit facilities 0.5 5.7 company common stock then outstanding , or b ) such date , if any , as may be designated by the board of directorstotal debt $ 156.7 $ 363.9 following the commencement of , or first public disclosure of the company paid $ 13.0 million and $ 4.6 million in an intention to commence , a tender offer or exchange offer interest charges during 2002 and 2001 , respectively. .

Questions:
what was the total debt in 2002?
and what was that of 2001?
what is, then, the change in total debt from 2001 to 2002?
what was the total debt in 2001?
how much does that change represent, in percentage, in relation to this total debt?

Answers:
156.7
363.9
-207.2
363.9
-57%