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. .

Year Ended December 31, 2016
Year Ended December 31, 2015
(in millions)
As Filed
Change in Accounting Principle
As Adjusted
As Filed
Change in Accounting Principle
As Adjusted
Operating income
$3,802
$248
$4,050
$2,065
$414
$2,479
Interest income
261
(248)
13
420
(414)
6
Net income
1,460
—
1,460
733
—
733
Net income as a percentage of service revenue
5%
—%
5%
3%
—%
3%
Adjusted EBITDA
$10,391
$248
$10,639
$7,393
$414
$7,807
Adjusted EBITDA margin (Adjusted EBITDA divided by service revenues)
37%
1%
38%
30%
1%
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: Analyse this data from a financial earnings document. what was the percent of the change in the disposal costs from 2016 to 2017
Choices:
0
-600.0
-60000
-352
-835
Correct choice index: 1