devon energy corporation and subsidiaries notes to consolidated financial statements 2013 ( continued ) debt maturities as of december 31 , 2014 , excluding premiums and discounts , are as follows ( in millions ) : .

2015
$ 1432
2016
350
2017
2014
2018
875
2019
1337
2020 and thereafter
7263
total
$ 11257

credit lines devon has a $ 3.0 billion syndicated , unsecured revolving line of credit ( the senior credit facility ) .
the maturity date for $ 30 million of the senior credit facility is october 24 , 2017 .
the maturity date for $ 164 million of the senior credit facility is october 24 , 2018 .
the maturity date for the remaining $ 2.8 billion is october 24 , 2019 .
amounts borrowed under the senior credit facility may , at the election of devon , bear interest at various fixed rate options for periods of up to twelve months .
such rates are generally less than the prime rate .
however , devon may elect to borrow at the prime rate .
the senior credit facility currently provides for an annual facility fee of $ 3.8 million that is payable quarterly in arrears .
as of december 31 , 2014 , there were no borrowings under the senior credit facility .
the senior credit facility contains only one material financial covenant .
this covenant requires devon 2019s ratio of total funded debt to total capitalization , as defined in the credit agreement , to be no greater than 65 percent .
the credit agreement contains definitions of total funded debt and total capitalization that include adjustments to the respective amounts reported in the accompanying consolidated financial statements .
also , total capitalization is adjusted to add back noncash financial write-downs such as full cost ceiling impairments or goodwill impairments .
as of december 31 , 2014 , devon was in compliance with this covenant with a debt-to- capitalization ratio of 20.9 percent .
commercial paper devon has access to $ 3.0 billion of short-term credit under its commercial paper program .
commercial paper debt generally has a maturity of between 1 and 90 days , although it can have a maturity of up to 365 days , and bears interest at rates agreed to at the time of the borrowing .
the interest rate is generally based on a standard index such as the federal funds rate , libor or the money market rate as found in the commercial paper market .
as of december 31 , 2014 , devon 2019s commercial paper borrowings of $ 932 million have a weighted- average borrowing rate of 0.44 percent .
retirement of senior notes on november 13 , 2014 , devon redeemed $ 1.9 billion of senior notes prior to their scheduled maturity , primarily with proceeds received from its asset divestitures .
the redemption includes the 2.4% ( 2.4 % ) $ 500 million senior notes due 2016 , the 1.2% ( 1.2 % ) $ 650 million senior notes due 2016 and the 1.875% ( 1.875 % ) $ 750 million senior notes due 2017 .
the notes were redeemed for $ 1.9 billion , which included 100 percent of the principal amount and a make-whole premium of $ 40 million .
on the date of redemption , these notes also had an unamortized discount of $ 2 million and unamortized debt issuance costs of $ 6 million .
the make-whole premium , unamortized discounts and debt issuance costs are included in net financing costs on the accompanying 2014 consolidated comprehensive statement of earnings. .

Question: what percentage increase occurred from oct 24 , 2017 to oct 24 , 2018 of senior credit facility maturity?
Answer: 446%
Calculation: subtract(164, 30), divide(#0, 30), multiply(#1, const_100)