In the context of this series of interconnected finance-related queries and the additional information provided by the pretext, table data, and posttext from a company's financial filings, please provide a response to the final question. This may require extracting information from the context and performing mathematical calculations. Please take into account the information provided in the preceding questions and their answers when formulating your response:
Context: 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 . <table class='wikitable'><tr><td>1</td><td>company/index</td><td>baseperiod 12/31/11</td><td>baseperiod 12/31/12</td><td>baseperiod 12/31/13</td><td>baseperiod 12/31/14</td><td>baseperiod 12/31/15</td><td>12/31/16</td></tr><tr><td>2</td><td>a . o . smith corporation</td><td>100.0</td><td>159.5</td><td>275.8</td><td>292.0</td><td>401.0</td><td>501.4</td></tr><tr><td>3</td><td>s&p mid cap 400 index</td><td>100.0</td><td>117.9</td><td>157.4</td><td>172.8</td><td>169.0</td><td>204.1</td></tr><tr><td>4</td><td>russell 1000 index</td><td>100.0</td><td>116.4</td><td>155.0</td><td>175.4</td><td>177.0</td><td>198.4</td></tr></table> 2011 2012 2013 2014 2015 2016 smith ( a o ) corp s&p midcap 400 index russell 1000 index .
Conversations: 
q0: what was the a. o. smith corporation share price as of 12/31/16? 501.4
q1: and the change in price between 12/31/11 and this date? 401.4
Question: so what was the percentage return during this time?
Answer: