adjusted ebitda increased $ 574 million , or 5% ( 5 % ) , in 2017 primarily from : 2022 an increase in branded postpaid and prepaid service revenues primarily due to strong customer response to our un- carrier initiatives , the ongoing success of our promotional activities , and the continued strength of our metropcs brand ; 2022 higher wholesale revenues ; and 2022 higher other revenues ; partially offset by 2022 higher selling , general and administrative expenses ; 2022 lower gains on disposal of spectrum licenses of $ 600 million ; gains on disposal were $ 235 million for the year ended december 31 , 2017 , compared to $ 835 million in the same period in 2016 ; 2022 higher cost of services expense ; 2022 higher net losses on equipment ; and 2022 the negative impact from hurricanes of approximately $ 201 million , net of insurance recoveries . adjusted ebitda increased $ 2.8 billion , or 36% ( 36 % ) , in 2016 primarily from : 2022 increased branded postpaid and prepaid service revenues primarily due to strong customer response to our un-carrier initiatives and the ongoing success of our promotional activities ; 2022 higher gains on disposal of spectrum licenses of $ 672 million ; gains on disposal were $ 835 million in 2016 compared to $ 163 million in 2015 ; 2022 lower losses on equipment ; and 2022 focused cost control and synergies realized from the metropcs business combination , primarily in cost of services ; partially offset by 2022 higher selling , general and administrative . effective january 1 , 2017 , the imputed discount on eip receivables , which was previously recognized within interest income in our consolidated statements of comprehensive income , is recognized within other revenues in our consolidated statements of comprehensive income . due to this presentation , the imputed discount on eip receivables is included in adjusted ebitda . see note 1 - summary of significant accounting policies of notes to the consolidated financial statements included in part ii , item 8 of this form 10-k for further information . we have applied this change retrospectively and presented the effect on the years ended december 31 , 2016 and 2015 , in the table below. .

Table: ( in millions ) year ended december 31 2016 as filed year ended december 31 2016 change in accounting principle year ended december 31 2016 as adjusted year ended december 31 2016 as filed year ended december 31 2016 change in accounting principle as adjusted operating income $ 3802 $ 248 $ 4050 $ 2065 $ 414 $ 2479 interest income 261 -248 ( 248 ) 13 420 -414 ( 414 ) 6 net income 1460 2014 1460 733 2014 733 net income as a percentage of service revenue 5% ( 5 % ) 2014% ( 2014 % ) 5% ( 5 % ) 3% ( 3 % ) 2014% ( 2014 % ) 3% ( 3 % ) adjusted ebitda $ 10391 $ 248 $ 10639 $ 7393 $ 414 $ 7807 adjusted ebitda margin ( adjusted ebitda divided by service revenues ) 37% ( 37 % ) 1% ( 1 % ) 38% ( 38 % ) 30% ( 30 % ) 1% ( 1 % ) 31% ( 31 % )

adjusted ebitda margin ( adjusted ebitda divided by service revenues ) 37% ( 37 % ) 1% ( 1 % ) 38% ( 38 % ) 30% ( 30 % ) 1% ( 1 % ) 31% ( 31 % ) liquidity and capital resources our principal sources of liquidity are our cash and cash equivalents and cash generated from operations , proceeds from issuance of long-term debt and common stock , capital leases , the sale of certain receivables , financing arrangements of vendor payables which effectively extend payment terms and secured and unsecured revolving credit facilities with dt. .

Question: what was the percent of the change in the disposal costs from 2016 to 2017
Answer: -71.9%
Calculation: subtract(235, 835)
Explanation: in 2107 the was a 600 million reduction in disposal costs equal 71.9 % of the amount in 2016