what is the roi of an investment in s&p500 from 2014 to 2016?
stock performance graph : the graph below shows the cumulative total shareholder return assuming the investment of $ 100 , on december 31 , 2012 , and the reinvestment of dividends thereafter , if any , in the company 2019s common stock versus the standard and poor 2019s s&p 500 retail index ( 201cs&p 500 retail index 201d ) and the standard and poor 2019s s&p 500 index ( 201cs&p 500 201d ) . .

|  | December 31, |
| :--- | :--- |
| Company/Index | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| O’Reilly Automotive, Inc. | $100 | $144 | $215 | $283 | $311 | $269 |
| S&P 500 Retail Index | 100 | 144 | 158 | 197 | 206 | 265 |
| S&P 500 | $100 | $130 | $144 | $143 | $157 | $187 |

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start_price = 144
end_price = 157
percent_change = (end_price - start_price) / start_price
answer = percent_change * 100