{"pre_text": ["notes to consolidated financial statements ( continued ) | 72 snap-on incorporated following is a reconciliation of the beginning and ending amount of unrecognized tax benefits : ( amounts in millions ) amount ."], "post_text": ["of the $ 18.7 million of unrecognized tax benefits at the end of 2007 , approximately $ 16.2 million would impact the effective income tax rate if recognized .", "interest and penalties related to unrecognized tax benefits are recorded in income tax expense .", "during the years ended december 29 , 2007 , december 30 , 2006 , and december 31 , 2005 , the company recognized approximately $ 1.2 million , $ 0.5 million and ( $ 0.5 ) million in net interest expense ( benefit ) , respectively .", "the company has provided for approximately $ 3.4 million , $ 2.2 million , and $ 1.7 million of accrued interest related to unrecognized tax benefits at the end of fiscal year 2007 , 2006 and 2005 , respectively .", "during the next 12 months , the company does not anticipate any significant changes to the total amount of unrecognized tax benefits , other than the accrual of additional interest expense in an amount similar to the prior year 2019s expense .", "with few exceptions , snap-on is no longer subject to u.s .", "federal and state/local income tax examinations by tax authorities for years prior to 2003 , and snap-on is no longer subject to non-u.s .", "income tax examinations by tax authorities for years prior to 2001 .", "the undistributed earnings of all non-u.s .", "subsidiaries totaled $ 338.5 million , $ 247.4 million and $ 173.6 million at the end of fiscal 2007 , 2006 and 2005 , respectively .", "snap-on has not provided any deferred taxes on these undistributed earnings as it considers the undistributed earnings to be permanently invested .", "determination of the amount of unrecognized deferred income tax liability related to these earnings is not practicable .", "the american jobs creation act of 2004 ( the 201cajca 201d ) created a one-time tax incentive for u.s .", "corporations to repatriate accumulated foreign earnings by providing a tax deduction of 85% ( 85 % ) of qualifying dividends received from foreign affiliates .", "under the provisions of the ajca , snap-on repatriated approximately $ 93 million of qualifying dividends in 2005 that resulted in additional income tax expense of $ 3.3 million for the year .", "note 9 : short-term and long-term debt notes payable and long-term debt as of december 29 , 2007 , was $ 517.9 million ; no commercial paper was outstanding at december 29 , 2007 .", "as of december 30 , 2006 , notes payable and long-term debt was $ 549.2 million , including $ 314.9 million of commercial paper .", "snap-on presented $ 300 million of the december 30 , 2006 , outstanding commercial paper as 201clong-term debt 201d on the accompanying december 30 , 2006 , consolidated balance sheet .", "on january 12 , 2007 , snap-on sold $ 300 million of unsecured notes consisting of $ 150 million of floating rate notes that mature on january 12 , 2010 , and $ 150 million of fixed rate notes that mature on january 15 , 2017 .", "interest on the floating rate notes accrues at a rate equal to the three-month london interbank offer rate plus 0.13% ( 0.13 % ) per year and is payable quarterly .", "interest on the fixed rate notes accrues at a rate of 5.50% ( 5.50 % ) per year and is payable semi-annually .", "snap-on used the proceeds from the sale of the notes , net of $ 1.5 million of transaction costs , to repay commercial paper obligations issued to finance the acquisition of business solutions .", "on january 12 , 2007 , the company also terminated a $ 250 million bridge credit agreement that snap-on established prior to its acquisition of business solutions. ."], "table": [["( amounts in millions )", "amount"], ["unrecognized tax benefits as of december 31 2006", "$ 21.3"], ["gross increases 2013 tax positions in prior periods", "0.5"], ["gross decreases 2013 tax positions in prior periods", "-0.4 ( 0.4 )"], ["gross increases 2013 tax positions in the current period", "0.5"], ["settlements with taxing authorities", "-3.0 ( 3.0 )"], ["lapsing of statutes of limitations", "-0.2 ( 0.2 )"], ["unrecognized tax benefits as of december 29 2007", "$ 18.7"]], "table_ori": [["<i>(Amounts in millions)</i>", "Amount"], ["Unrecognized tax benefits as of December 31, 2006", "$21.3"], ["Gross increases – tax positions in prior periods", "0.5"], ["Gross decreases – tax positions in prior periods", "(0.4)"], ["Gross increases – tax positions in the current period", "0.5"], ["Settlements with taxing authorities", "(3.0)"], ["Lapsing of statutes of limitations", "(0.2)"], ["Unrecognized tax benefits as of December 29, 2007", "$18.7"]]}

Question: what is the net change amount in the balance of unrecognized tax benefits from 2006 to 2007?
Evidence:
table_1: ( amounts in millions ) the unrecognized tax benefits as of december 31 2006 of amount is $ 21.3 ;
table_7: ( amounts in millions ) the unrecognized tax benefits as of december 29 2007 of amount is $ 18.7 ;
Program: subtract(18.7, 21.3)
Answer:
str_answer: -2.6
exe_answer: -2.6