2 0 0 8 a n n u a l r e p o r t stock performance graph the following graph sets forth the performance of our series a common , series b common stock , and series c common stock for the period september 18 , 2008 through december 31 , 2008 as compared with the performance of the standard and poor 2019s 500 index and a peer group index which consists of the walt disney company , time warner inc. , cbs corporation class b common stock , viacom , inc .class b common stock , news corporation class a common stock , and scripps network interactive , inc .the graph assumes $ 100 originally invested on september 18 , 2006 and that all subsequent dividends were reinvested in additional shares .september 18 , september 30 , december 31 , 2008 2008 2008 .            | september 18 2008 | september 30 2008 | december 31 2008
disca      | $ 100.00          | $ 103.19          | $ 102.53        
discb      | $ 100.00          | $ 105.54          | $ 78.53         
disck      | $ 100.00          | $ 88.50           | $ 83.69         
s&p 500    | $ 100.00          | $ 96.54           | $ 74.86         
peer group | $ 100.00          | $ 92.67           | $ 68.79          s&p 500 peer group .
Question: what is the change in value of an investment in disca from sep 18 to dec 31, 2008?
Steps: subtract(102.53, const_100)
Answer: 2.53
Question: what return does this represent?

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.
2 0 0 8 a n n u a l r e p o r t stock performance graph the following graph sets forth the performance of our series a common , series b common stock , and series c common stock for the period september 18 , 2008 through december 31 , 2008 as compared with the performance of the standard and poor 2019s 500 index and a peer group index which consists of the walt disney company , time warner inc. , cbs corporation class b common stock , viacom , inc .class b common stock , news corporation class a common stock , and scripps network interactive , inc .the graph assumes $ 100 originally invested on september 18 , 2006 and that all subsequent dividends were reinvested in additional shares .september 18 , september 30 , december 31 , 2008 2008 2008 .            | september 18 2008 | september 30 2008 | december 31 2008
disca      | $ 100.00          | $ 103.19          | $ 102.53        
discb      | $ 100.00          | $ 105.54          | $ 78.53         
disck      | $ 100.00          | $ 88.50           | $ 83.69         
s&p 500    | $ 100.00          | $ 96.54           | $ 74.86         
peer group | $ 100.00          | $ 92.67           | $ 68.79          s&p 500 peer group .
Question: what is the change in value of an investment in disca from sep 18 to dec 31, 2008?
Steps: subtract(102.53, const_100)
Answer: 2.53
Question: what return does this represent?
