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)