increased investment in programming to support subscriber growth , higher offer costs and continued investment in presto , partially offset by lower depreciation expense resulting from foxtel 2019s reassessment of the useful lives of cable and satellite installations . net income decreased as a result of the lower operating income noted above , partially offset by lower income tax expense . ( b ) other equity affiliates , net for the fiscal year ended june 30 , 2016 includes losses primarily from the company 2019s interests in draftstars and elara technologies , which owns proptiger . interest , net 2014interest , net for the fiscal year ended june 30 , 2016 decreased $ 13 million , or 23% ( 23 % ) , as compared to fiscal 2015 , primarily due to the negative impact of foreign currency fluctuations and interest expense associated with the rea facility . ( see note 9 to the consolidated financial statements ) . other , net 2014 for the fiscal years ended june 30 .

1	( in millions )	for the fiscal years ended june 30 , 2016	for the fiscal years ended june 30 , 2015
2	gain on iproperty transaction ( a )	$ 29	$ 2014
3	impairment of marketable securities and cost method investments ( b )	-21 ( 21 )	-5 ( 5 )
4	gain on sale of marketable securities ( c )	2014	29
5	dividends received from cost method investments	2014	25
6	gain on sale of cost method investments	2014	15
7	other	10	11
8	total other net	$ 18	$ 75

( a ) rea group recognized a gain of $ 29 million resulting from the revaluation of its previously held equity interest in iproperty during the fiscal year ended june 30 , 2016 . ( see note 3 to the consolidated financial statements ) . ( b ) the company recorded write-offs and impairments of certain investments in the fiscal years ended june 30 , 2016 and 2015 . these write-offs and impairments were taken either as a result of the deteriorating financial position of the investee or due to an other-than-temporary impairment resulting from sustained losses and limited prospects for recovery . ( see note 6 to the consolidated financial statements. ) ( c ) in august 2014 , rea group completed the sale of a minority interest held in marketable securities for total cash consideration of $ 104 million . as a result of the sale , rea group recognized a pre-tax gain of $ 29 million , which was reclassified out of accumulated other comprehensive income and included in other , net in the statement of operations . income tax benefit ( expense ) 2014the company 2019s income tax benefit and effective tax rate for the fiscal year ended june 30 , 2016 were $ 54 million and ( 30% ( 30 % ) ) , respectively , as compared to an income tax expense and effective tax rate of $ 185 million and 34% ( 34 % ) , respectively , for fiscal 2015 . for the fiscal years ended june 30 , 2016 the company recorded a tax benefit of $ 54 million on pre-tax income of $ 181 million resulting in an effective tax rate that was lower than the u.s . statutory tax . the lower tax rate was primarily due to a tax benefit of approximately $ 106 million related to the release of previously established valuation allowances related to certain u.s . federal net operating losses and state deferred tax assets . this benefit was recognized in conjunction with management 2019s plan to dispose of the company 2019s digital education business in the first quarter of fiscal 2016 , as the company now expects to generate sufficient u.s . taxable income to utilize these deferred tax assets prior to expiration . in addition , the effective tax rate was also impacted by the $ 29 million non-taxable gain resulting from the revaluation of rea group 2019s previously held equity interest in iproperty . for the fiscal year ended june 30 , 2015 , the company 2019s effective tax rate was lower than the u.s . statutory tax rate primarily due to the impact from foreign operations which are subject to lower tax rates , partially offset by the impact of nondeductible items and changes in our accrued liabilities for uncertain tax positions . ( see note 18 to the consolidated financial statements ) . .

Question: what was the decrease amount on the net interest from fiscal year 2015 to 2016?
Answer: 13