what was the percentage increase for teleflex incorporated's market performance from 2014-2015?
part a0ii item a05 . market for registrant 2019s common equity , related stockholder matters and issuer purchases of equity securities our common stock is listed on the new york stock exchange under the symbol 201ctfx . 201d as of february 19 , 2019 , we had 473 holders of record of our common stock . a substantially greater number of holders of our common stock are beneficial owners whose shares are held by brokers and other financial institutions for the accounts of beneficial owners . 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 , 2013 and that all dividends were reinvested . market performance .

| Company / Index | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| Teleflex Incorporated | 100 | 124 | 143 | 177 | 275 | 288 |
| S&P 500 Index | 100 | 114 | 115 | 129 | 157 | 150 |
| S&P 500 Healthcare Equipment & Supply Index | 100 | 126 | 134 | 142 | 186 | 213 |

s&p 500 healthcare equipment & supply index 100 126 134 142 186 213 .

teleflex_2015 = 143
teleflex_2014 = 124
increase = teleflex_2015 - teleflex_2014
percent_change = increase / teleflex_2014
answer = percent_change * 100