what was the differencet in percentage 5 year cumulative total return for comcast class a stock and the s&p 500 stock index for the year ended 2015?
stock performance graph comcast the graph below compares the yearly percentage change in the cumulative total shareholder return on comcast 2019s class a common stock during the five years ended december 31 , 2015 with the cumulative total returns on the standard & poor 2019s 500 stock index and with a select peer group consisting of us and other companies engaged in the cable , communications and media industries . this peer group consists of us , as well as cablevision systems corporation ( class a ) , dish network corporation ( class a ) , directv inc . ( included through july 24 , 2015 , the date of acquisition by at&t corp. ) and time warner cable inc . ( the 201ccable subgroup 201d ) , and time warner inc. , walt disney company , viacom inc . ( class b ) , twenty-first century fox , inc . ( class a ) , and cbs corporation ( class b ) ( the 201cmedia subgroup 201d ) . the peer group was constructed as a composite peer group in which the cable subgroup is weighted 63% ( 63 % ) and the media subgroup is weighted 37% ( 37 % ) based on the respective revenue of our cable communications and nbcuniversal segments . the graph assumes $ 100 was invested on december 31 , 2010 in our class a common stock and in each of the following indices and assumes the reinvestment of dividends . comparison of 5 year cumulative total return 12/1412/1312/1212/10 12/15 comcast class a s&p 500 peer group index .

|  | 2011 | 2012 | 2013 | 2014 | 2015 |
| :--- | :--- | :--- | :--- | :--- | :--- |
| Comcast Class A | $110 | $177 | $250 | $282 | $279 |
| S&P 500 Stock Index | $102 | $118 | $156 | $177 | $180 |
| Peer Group Index | $110 | $157 | $231 | $267 | $265 |

nbcuniversal nbcuniversal is a wholly owned subsidiary of nbcuniversal holdings and there is no market for its equity securities . 39 comcast 2015 annual report on form 10-k .

comcast_return = 279
comcast_investment = 100
comcast_return_percent = comcast_return / comcast_investment
s_and_p_return = 180
s_and_p_investment = 100
s_and_p_return_percent = s_and_p_return / s_and_p_investment
peer_group_return = 265
peer_group_investment = 100
peer_group_return_percent = peer_group_return / peer_group_investment
difference_in_returns = comcast_return_percent - s_and_p_return_percent
answer = difference_in_returns * 100