human
stock price performance the following graph shows a comparison of the cumulative total return on our common stock, the standard & poor 2019s 500 index and the standard & poor 2019s retail index. the graph assumes that the value of an investment in our common stock and in each such index was $100 on december 31, 2011, and that any dividends have been reinvested. the comparison in the graph below is based solely on historical data and is not intended to forecast the possible future performance of our common stock. comparison of cumulative total return among advance auto parts, inc., s&p 500 index and s&p retail index company/index december 31, december 29, december 28, january 3, january 2, december 31.
| Company/Index | December 31, 2011 | December 29, 2012 | December 28, 2013 | January 3, 2015 | January 2, 2016 | December 31, 2016 |
| --------- | --------- | --------- | --------- | --------- | --------- | --------- |
| Advance Auto Parts | $100.00 | $102.87 | $158.46 | $228.88 | $217.49 | $244.64 |
| S&P 500 Index | 100.00 | 114.07 | 152.98 | 174.56 | 177.01 | 198.18 |
| S&P Retail Index | 100.00 | 122.23 | 178.55 | 196.06 | 245.31 | 256.69 |
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Please compute the result.
what was the change in the value of s&p 500 index from january 2015 to january 2016?
assistant
2.45
human
and what was the value of that stock in january 2015?
assistant
174.56
human
how much does that change represent in relation to this 2015 value?
assistant
0.01404