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 .

for the fiscal years ended june 30 , 2016: gain on iproperty transaction ( a ): 29
impairment of marketable securities and cost method investments ( b ): -21
gain on sale of marketable securities ( c ): 2014
dividends received from cost method investments: 2014
gain on sale of cost method investments: 2014
other: 10
total other net: 18
for the fiscal years ended june 30 , 2015: gain on iproperty transaction ( a ): 2014
impairment of marketable securities and cost method investments ( b ): -5
gain on sale of marketable securities ( c ): 29
dividends received from cost method investments: 25
gain on sale of cost method investments: 15
other: 11
total other net: 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 ) . .

Questions:
what was the decrease amount on the net interest from fiscal year 2015 to 2016?
and what was the equivalent of that as a percentage of the 2015 net interest?
considering, then, that decrease amount and how much it represents in relation to this 2015 net interest, what was the full amount of this net interest?
and what was the full amount of the 2016 net interest, considering the 2015 one and how much it decreased?

Answers:
13
23%
56.5
69.5