visa inc . notes to consolidated financial statements 2014 ( continued ) september 30 , 2016 note 16 2014share-based compensation 2007 equity incentive compensation plan the company 2019s 2007 equity incentive compensation plan , or the eip , authorizes the compensation committee of the board of directors to grant non-qualified stock options ( 201coptions 201d ) , restricted stock awards ( 201crsas 201d ) , restricted stock units ( 201crsus 201d ) and performance-based shares to its employees and non-employee directors , for up to 236 million shares of class a common stock . shares available for award may be either authorized and unissued or previously issued shares subsequently acquired by the company . the eip will continue to be in effect until all of the common stock available under the eip is delivered and all restrictions on those shares have lapsed , unless the eip is terminated earlier by the company 2019s board of directors . in january 2016 , the company 2019s board of directors approved an amendment of the eip effective february 3 , 2016 , such that awards may be granted under the plan until january 31 , 2022 . share-based compensation cost is recorded net of estimated forfeitures on a straight-line basis for awards with service conditions only , and on a graded-vesting basis for awards with service , performance and market conditions . the company 2019s estimated forfeiture rate is based on an evaluation of historical , actual and trended forfeiture data . for fiscal 2016 , 2015 and 2014 , the company recorded share-based compensation cost related to the eip of $ 211 million , $ 184 million and $ 172 million , respectively , in personnel on its consolidated statements of operations . the related tax benefits were $ 62 million , $ 54 million and $ 51 million for fiscal 2016 , 2015 and 2014 , respectively . the amount of capitalized share-based compensation cost was immaterial during fiscal 2016 , 2015 and all per share amounts and number of shares outstanding presented below reflect the four-for-one stock split that was effected in the second quarter of fiscal 2015 . see note 14 2014stockholders 2019 equity . options options issued under the eip expire 10 years from the date of grant and primarily vest ratably over 3 years from the date of grant , subject to earlier vesting in full under certain conditions . during fiscal 2016 , 2015 and 2014 , the fair value of each stock option was estimated on the date of grant using a black-scholes option pricing model with the following weighted-average assumptions: .
what is the percent change in fair value per option granted from 2015 to 2016?
( 1 ) this assumption is based on the company 2019s historical option exercises and those of a set of peer companies that management believes is generally comparable to visa . the company 2019s data is weighted based on the number of years between the measurement date and visa 2019s initial public offering as a percentage of the options 2019 contractual term . the relative weighting placed on visa 2019s data and peer data in fiscal 2016 was approximately 77% ( 77 % ) and 23% ( 23 % ) , respectively , 67% ( 67 % ) and 33% ( 33 % ) in fiscal 2015 , respectively , and 58% ( 58 % ) and 42% ( 42 % ) in fiscal 2014 , respectively. .