Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.

Text: dividends for a summary of the cash dividends paid on citi 2019s outstanding common stock during 2009 and 2010 , see note 33 to the consolidated financial statements . for so long as the u.s . government holds any citigroup trust preferred securities acquired pursuant to the exchange offers consummated in 2009 , citigroup has agreed not to pay a quarterly common stock dividend exceeding $ 0.01 per quarter , subject to certain customary exceptions . further , any dividend on citi 2019s outstanding common stock would need to be made in compliance with citi 2019s obligations to any remaining outstanding citigroup preferred stock . performance graph comparison of five-year cumulative total return the following graph and table compare the cumulative total return on citigroup 2019s common stock with the cumulative total return of the s&p 500 index and the s&p financial index over the five-year period extending through december 31 , 2010 . the graph and table assume that $ 100 was invested on december 31 , 2005 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 comparison of five-year cumulative total return for the years ended 2006 2007 2008 2009 2010 . <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>2006</td><td>119.55</td><td>115.79</td><td>119.19</td></tr><tr><td>3</td><td>2007</td><td>66.10</td><td>122.15</td><td>96.98</td></tr><tr><td>4</td><td>2008</td><td>15.88</td><td>76.96</td><td>43.34</td></tr><tr><td>5</td><td>2009</td><td>7.85</td><td>97.33</td><td>50.80</td></tr><tr><td>6</td><td>2010</td><td>11.22</td><td>111.99</td><td>56.96</td></tr></table> .
Question: what was the change in value of the cititgroup's common stock from the year of 2005 to 2010?
Answer: -88.78
Question: and what was the original value invested in that stock in 2005?

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