{"pre_text": ["n o t e s t o c o n s o l i d a t e d f i n a n c i a l s t a t e m e n t s ( continued ) ace limited and subsidiaries the following table shows changes in the company 2019s stock options for the years ended december 31 , 2008 , 2007 , and number of options weighted average exercise price ."], "post_text": ["the weighted-average remaining contractual term was 5.8 years for the stock options outstanding and 4.6 years for the stock options exercisable at december 31 , 2008 .", "the total intrinsic value was approximately $ 66 million for stock options out- standing and $ 81 million for stock options exercisable at december 31 , 2008 .", "the weighted-average fair value for the stock options granted for the year ended december 31 , 2008 was $ 17.60 .", "the total intrinsic value for stock options exercised dur- ing the years ended december 31 , 2008 , 2007 , and 2006 , was approximately $ 54 million , $ 44 million , and $ 43 million , respectively .", "the amount of cash received during the year ended december 31 , 2008 , from the exercise of stock options was $ 97 million .", "restricted stock the company 2019s 2004 ltip also provides for grants of restricted stock .", "the company generally grants restricted stock with a 4-year vesting period , based on a graded vesting schedule .", "the restricted stock is granted at market close price on the date of grant .", "included in the company 2019s share-based compensation expense in the year ended december 31 , 2008 , is a portion of the cost related to the unvested restricted stock granted in the years 2004 to 2008. ."], "table": [["", "number of options", "weightedaverageexercise price"], ["options outstanding december 31 2005", "12643761", "$ 36.53"], ["granted", "1505215", "$ 56.29"], ["exercised", "-1982560 ( 1982560 )", "$ 33.69"], ["forfeited", "-413895 ( 413895 )", "$ 39.71"], ["options outstanding december 31 2006", "11752521", "$ 39.43"], ["granted", "1549091", "$ 56.17"], ["exercised", "-1830004 ( 1830004 )", "$ 35.73"], ["forfeited", "-200793 ( 200793 )", "$ 51.66"], ["options outstanding december 31 2007", "11270815", "$ 42.12"], ["granted", "1612507", "$ 60.17"], ["exercised", "-2650733 ( 2650733 )", "$ 36.25"], ["forfeited", "-309026 ( 309026 )", "$ 54.31"], ["options outstanding december 31 2008", "9923563", "$ 46.24"]], "table_ori": [["", "Number of Options", "WeightedAverageExercise Price"], ["Options outstanding, December 31, 2005", "12,643,761", "$36.53"], ["Granted", "1,505,215", "$56.29"], ["Exercised", "(1,982,560)", "$33.69"], ["Forfeited", "(413,895)", "$39.71"], ["Options outstanding, December 31, 2006", "11,752,521", "$39.43"], ["Granted", "1,549,091", "$56.17"], ["Exercised", "(1,830,004)", "$35.73"], ["Forfeited", "(200,793)", "$51.66"], ["Options outstanding, December 31, 2007", "11,270,815", "$42.12"], ["Granted", "1,612,507", "$60.17"], ["Exercised", "(2,650,733)", "$36.25"], ["Forfeited", "(309,026)", "$54.31"], ["Options outstanding, December 31, 2008", "9,923,563", "$46.24"]]}

Question: what is the percentage change in the balance of outstanding options from 2005 to 2008?
Evidence:
table_1: the options outstanding december 31 2005 of number of options is 12643761 ; the options outstanding december 31 2005 of weightedaverageexercise price is $ 36.53 ;
table_13: the options outstanding december 31 2008 of number of options is 9923563 ; the options outstanding december 31 2008 of weightedaverageexercise price is $ 46.24 ;
Program: subtract(9923563, 12643761), divide(#0, 12643761)
Answer:
str_answer: -21.5%
exe_answer: -0.21514