what was the difference in percentage cumulative total shareholder return on masco common stock versus the s&p 500 index for the five year period ended 2010?
performance graph the table below compares the cumulative total shareholder return on our common stock with the cumulative total return of ( i ) the standard & poor 2019s 500 composite stock index ( 201cs&p 500 index 201d ) , ( ii ) the standard & poor 2019s industrials index ( 201cs&p industrials index 201d ) and ( iii ) the standard & poor 2019s consumer durables & apparel index ( 201cs&p consumer durables & apparel index 201d ) , from december 31 , 2005 through december 31 , 2010 , when the closing price of our common stock was $ 12.66 . the graph assumes investments of $ 100 on december 31 , 2005 in our common stock and in each of the three indices and the reinvestment of dividends . performance graph 201020092008200720062005 s&p 500 index s&p industrials index s&p consumer durables & apparel index the table below sets forth the value , as of december 31 for each of the years indicated , of a $ 100 investment made on december 31 , 2005 in each of our common stock , the s&p 500 index , the s&p industrials index and the s&p consumer durables & apparel index and includes the reinvestment of dividends. .

|  | 2006 | 2007 | 2008 | 2009 | 2010 |
| :--- | :--- | :--- | :--- | :--- | :--- |
| Masco | $101.79 | $76.74 | $42.81 | $54.89 | $51.51 |
| S&P 500 Index | $115.61 | $121.95 | $77.38 | $97.44 | $111.89 |
| S&P Industrials Index | $113.16 | $126.72 | $76.79 | $92.30 | $116.64 |
| S&P Consumer Durables & Apparel Index | $106.16 | $84.50 | $56.13 | $76.51 | $99.87 |

in july 2007 , our board of directors authorized the purchase of up to 50 million shares of our common stock in open-market transactions or otherwise . at december 31 , 2010 , we had remaining authorization to repurchase up to 27 million shares . during 2010 , we repurchased and retired three million shares of our common stock , for cash aggregating $ 45 million to offset the dilutive impact of the 2010 grant of three million shares of long-term stock awards . we did not purchase any shares during the three months ended december 31 , 2010. .

masco_end_2010 = 51.51
masco_start_2010 = 100
snp_end_2010 = 111.89
snp_start_2010 = 100
percent_change_masco = (masco_end_2010 - masco_start_2010) / masco_start_2010
percent_change_snp = (snp_end_2010 - snp_start_2010) / snp_start_2010
difference = percent_change_masco - percent_change_snp
answer = difference * 100