human
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.
Please answer the following questions with expressions if necessary.
what was the price of comcast class a shares in 2015?
assistant
279
human
and the initial investment?
assistant
100
human
so what was the change in price over these years?
assistant
subtract(279, 100)
human
so what was the percentage return over these years?
assistant
subtract(279, 100), divide(#0, 100)