Financial report context:
other long term debt in december 2012 , the company entered into a $ 50.0 million recourse loan collateralized by the land , buildings and tenant improvements comprising the company 2019s corporate headquarters . the loan has a seven year term and maturity date of december 2019 . the loan bears interest at one month libor plus a margin of 1.50% ( 1.50 % ) , and allows for prepayment without penalty . the loan includes covenants and events of default substantially consistent with the company 2019s credit agreement discussed above . the loan also requires prior approval of the lender for certain matters related to the property , including transfers of any interest in the property . as of december 31 , 2017 and 2016 , the outstanding balance on the loan was $ 40.0 million and $ 42.0 million , respectively . the weighted average interest rate on the loan was 2.5% ( 2.5 % ) and 2.0% ( 2.0 % ) for the years ended december 31 , 2017 and 2016 , respectively . the following are the scheduled maturities of long term debt as of december 31 , 2017 : ( in thousands ) .

Financial table:
2018: 2019; $ 27000: 63000
2018: 2020; $ 27000: 25000
2018: 2021; $ 27000: 86250
2018: 2022; $ 27000: 2014
2018: 2023 and thereafter; $ 27000: 600000
2018: total scheduled maturities of long term debt; $ 27000: $ 801250
2018: current maturities of long term debt; $ 27000: $ 27000

Additional report context:
interest expense , net was $ 34.5 million , $ 26.4 million , and $ 14.6 million for the years ended december 31 , 2017 , 2016 and 2015 , 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 $ 1.3 million , $ 1.2 million , and $ 0.8 million for the years ended december 31 , 2017 , 2016 and 2015 , 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 . 7 . 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 , 2017 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 , 2017 as well as .

Question: what was the percentage change in interest expense net from 2015 to 2016?
Answer: 81%