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: comparison of five-year cumulative total return the following graph compares the cumulative total return on citigroup 2019s common stock with the s&p 500 index and the s&p financial index over the five-year period extending through december 31 , 2009 . the graph assumes that $ 100 was invested on december 31 , 2004 in citigroup 2019s common stock , the s&p 500 index and the s&p financial index and that all dividends were reinvested . citigroup s&p 500 index s&p financial index 2005 2006 2007 2008 2009 comparison of five-year cumulative total return for the years ended . <table class='wikitable'><tr><td>1</td><td>december 31</td><td>citigroup</td><td>s&p 500 index</td><td>s&p financial index</td></tr><tr><td>2</td><td>2005</td><td>104.38</td><td>104.83</td><td>106.30</td></tr><tr><td>3</td><td>2006</td><td>124.02</td><td>121.20</td><td>126.41</td></tr><tr><td>4</td><td>2007</td><td>70.36</td><td>127.85</td><td>103.47</td></tr><tr><td>5</td><td>2008</td><td>18.71</td><td>81.12</td><td>47.36</td></tr><tr><td>6</td><td>2009</td><td>9.26</td><td>102.15</td><td>55.27</td></tr></table> .
Conversations: 
q0: what was the net change in citigroup from 2007 to 2008? -51.65
Question: what is the percent change?
Answer: