human
state street corporation | 52 shareholder return performance presentation the graph presented below compares the cumulative total shareholder return on state street's common stock to the cumulative total return of the s&p 500 index, the s&p financial index and the kbw bank index over a five-year period. the cumulative total shareholder return assumes the investment of $100 in state street common stock and in each index on december 31, 2012. it also assumes reinvestment of common stock dividends. the s&p financial index is a publicly available, capitalization-weighted index, comprised of 67 of the standard & poor 2019s 500 companies, representing 27 diversified financial services companies, 23 insurance companies, and 17 banking companies. the kbw bank index is a modified cap-weighted index consisting of 24 exchange-listed stocks, representing national money center banks and leading regional institutions. .
|  | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| --------- | --------- | --------- | --------- | --------- | --------- | --------- |
| State Street Corporation | $100 | $159 | $172 | $148 | $178 | $227 |
| S&P 500 Index | 100 | 132 | 151 | 153 | 171 | 208 |
| S&P Financial Index | 100 | 136 | 156 | 154 | 189 | 230 |
| KBW Bank Index | 100 | 138 | 151 | 151 | 195 | 231 |
.
Please compute the result.
what was the value of state street in 2015?
assistant
148.0
human
what was the value in 2012?
assistant
100.0
human
what was the net change in value?
assistant
48.0
human
what was the 2012 value?
assistant
100.0
human
what is the net change divided by the 2012 value?
assistant
0.48