human
the graph below shows a five-year comparison of the cumulative shareholder return on our common stock with the cumulative total return of the standard & poor 2019s (s&p) mid cap 400 index and the russell 1000 index, both of which are published indices. comparison of five-year cumulative total return from december 31, 2011 to december 31, 2016 assumes $100 invested with reinvestment of dividends period indexed returns.
|  | BasePeriod | Indexed Returns |
| Company/Index | 12/31/11 | 12/31/12 | 12/31/13 | 12/31/14 | 12/31/15 | 12/31/16 |
| A. O. Smith Corporation | 100.0 | 159.5 | 275.8 | 292.0 | 401.0 | 501.4 |
| S&P Mid Cap 400 Index | 100.0 | 117.9 | 157.4 | 172.8 | 169.0 | 204.1 |
| Russell 1000 Index | 100.0 | 116.4 | 155.0 | 175.4 | 177.0 | 198.4 |
2011 2012 2013 2014 2015 2016 smith (a o) corp s&p midcap 400 index russell 1000 index.
Please answer the following question with expressions if necessary.
so what was the percentage change during this time?
assistant
subtract(501.4, const_100), divide(#0, const_100), subtract(198.4, const_100), divide(#2, const_100)