interest expense , net was $ 26.4 million , $ 14.6 million , and $ 5.3 million for the years ended december 31 , 2016 , 2015 and 2014 , respectively .
interest expense includes the amortization of deferred financing costs , bank fees , capital and built-to-suit lease interest and interest expense under the credit and other long term debt facilities .
amortization of deferred financing costs was $ 1.2 million , $ 0.8 million , and $ 0.6 million for the years ended december 31 , 2016 , 2015 and 2014 , respectively .
the company monitors the financial health and stability of its lenders under the credit and other long term debt facilities , however during any period of significant instability in the credit markets lenders could be negatively impacted in their ability to perform under these facilities .
6 .
commitments and contingencies obligations under operating leases the company leases warehouse space , office facilities , space for its brand and factory house stores and certain equipment under non-cancelable operating leases .
the leases expire at various dates through 2033 , excluding extensions at the company 2019s option , and include provisions for rental adjustments .
the table below includes executed lease agreements for brand and factory house stores that the company did not yet occupy as of december 31 , 2016 and does not include contingent rent the company may incur at its stores based on future sales above a specified minimum or payments made for maintenance , insurance and real estate taxes .
the following is a schedule of future minimum lease payments for non-cancelable real property operating leases as of december 31 , 2016 as well as significant operating lease agreements entered into during the period after december 31 , 2016 through the date of this report : ( in thousands ) .

2017
$114,857
2018
127,504
2019
136,040
2020
133,092
2021
122,753
2022 and thereafter
788,180
Total future minimum lease payments
$1,422,426

included in selling , general and administrative expense was rent expense of $ 109.0 million , $ 83.0 million and $ 59.0 million for the years ended december 31 , 2016 , 2015 and 2014 , respectively , under non-cancelable operating lease agreements .
included in these amounts was contingent rent expense of $ 13.0 million , $ 11.0 million and $ 11.0 million for the years ended december 31 , 2016 , 2015 and 2014 , respectively .
sports marketing and other commitments within the normal course of business , the company enters into contractual commitments in order to promote the company 2019s brand and products .
these commitments include sponsorship agreements with teams and athletes on the collegiate and professional levels , official supplier agreements , athletic event sponsorships and other marketing commitments .
the following is a schedule of the company 2019s future minimum payments under its sponsorship and other marketing agreements as of december 31 .

Question: Analyse this data from a financial earnings document. what was the percentage change in rent expenses included in selling , general and administrative expense from 2015 to 2016?
Choices:
-0.31325
2.36364
-1602.20482
0.31325
0.0002
Correct choice index: 3