human
stock performance graph the following graph provides a comparison of five year cumulative total stockholder returns of teleflex common stock, the standard a0& poor 2019s (s&p) 500 stock index and the s&p 500 healthcare equipment & supply index. the annual changes for the five-year period shown on the graph are based on the assumption that $100 had been invested in teleflex common stock and each index on december a031, 2012 and that all dividends were reinvested. market performance.
| Company / Index | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| --------- | --------- | --------- | --------- | --------- | --------- | --------- |
| Teleflex Incorporated | 100 | 134 | 166 | 192 | 237 | 368 |
| S&P 500 Index | 100 | 132 | 151 | 153 | 171 | 208 |
| S&P 500 Healthcare Equipment & Supply Index | 100 | 128 | 161 | 171 | 181 | 238 |
s&p 500 healthcare equipment & supply index 100 128 161 171 181 238.
Please answer the following questions with expressions if necessary.
what is the net change in value of the s&p 500 index from 2012 to 2017?
assistant
subtract(208, 100)
human
what is the percent change?
assistant
subtract(208, 100), divide(#0, 100)