part ii item 5 . market for registrant 2019s common equity , related stockholder matters and issuer purchases of equity securities . our series a common stock , series b common stock and series c common stock are listed and traded on the nasdaq global select market ( 201cnasdaq 201d ) under the symbols 201cdisca , 201d 201cdiscb 201d and 201cdisck , 201d respectively . the following table sets forth , for the periods indicated , the range of high and low sales prices per share of our series a common stock , series b common stock and series c common stock as reported on yahoo! finance ( finance.yahoo.com ) . series a common stock series b common stock series c common stock high low high low high low fourth quarter $ 23.73 $ 16.28 $ 26.80 $ 20.00 $ 22.47 $ 15.27 third quarter $ 27.18 $ 20.80 $ 27.90 $ 22.00 $ 26.21 $ 19.62 second quarter $ 29.40 $ 25.11 $ 29.55 $ 25.45 $ 28.90 $ 24.39 first quarter $ 29.62 $ 26.34 $ 29.65 $ 27.55 $ 28.87 $ 25.76 fourth quarter $ 29.55 $ 25.01 $ 30.50 $ 26.00 $ 28.66 $ 24.20 third quarter $ 26.97 $ 24.27 $ 28.00 $ 25.21 $ 26.31 $ 23.44 second quarter $ 29.31 $ 23.73 $ 29.34 $ 24.15 $ 28.48 $ 22.54 first quarter $ 29.42 $ 24.33 $ 29.34 $ 24.30 $ 28.00 $ 23.81 as of february 21 , 2018 , there were approximately 1308 , 75 and 1414 record holders of our series a common stock , series b common stock and series c common stock , respectively . these amounts do not include the number of shareholders whose shares are held of record by banks , brokerage houses or other institutions , but include each such institution as one shareholder . we have not paid any cash dividends on our series a common stock , series b common stock or series c common stock , and we have no present intention to do so . payment of cash dividends , if any , will be determined by our board of directors after consideration of our earnings , financial condition and other relevant factors such as our credit facility's restrictions on our ability to declare dividends in certain situations . purchases of equity securities the following table presents information about our repurchases of common stock that were made through open market transactions during the three months ended december 31 , 2017 ( in millions , except per share amounts ) . period total number of series c shares purchased average paid per share : series c ( a ) total number of shares purchased as part of publicly announced plans or programs ( b ) ( c ) approximate dollar value of shares that may yet be purchased under the plans or programs ( a ) ( b ) october 1 , 2017 - october 31 , 2017 2014 $ 2014 2014 $ 2014 november 1 , 2017 - november 30 , 2017 2014 $ 2014 2014 $ 2014 december 1 , 2017 - december 31 , 2017 2014 $ 2014 2014 $ 2014 total 2014 2014 $ 2014 ( a ) the amounts do not give effect to any fees , commissions or other costs associated with repurchases of shares . ( b ) under the stock repurchase program , management was authorized to purchase shares of the company's common stock from time to time through open market purchases or privately negotiated transactions at prevailing prices or pursuant to one or more accelerated stock repurchase agreements or other derivative arrangements as permitted by securities laws and other legal requirements , and subject to stock price , business and market conditions and other factors . the company's authorization under the program expired on october 8 , 2017 and we have not repurchased any shares of common stock since then . we historically have funded and in the future may fund stock repurchases through a combination of cash on hand and cash generated by operations and the issuance of debt . in the future , if further authorization is provided , we may also choose to fund stock repurchases through borrowings under our revolving credit facility or future financing transactions . there were no repurchases of our series a and b common stock during 2017 and no repurchases of series c common stock during the three months ended december 31 , 2017 . the company first announced its stock repurchase program on august 3 , 2010 . ( c ) we entered into an agreement with advance/newhouse to repurchase , on a quarterly basis , a number of shares of series c-1 convertible preferred stock convertible into a number of shares of series c common stock . we did not convert any any shares of series c-1 convertible preferred stock during the three months ended december 31 , 2017 . there are no planned repurchases of series c-1 convertible preferred stock for the first quarter of 2018 as there were no repurchases of series a or series c common stock during the three months ended december 31 , 2017 . stock performance graph the following graph sets forth the cumulative total shareholder return on our series a common stock , series b common stock and series c common stock as compared with the cumulative total return of the companies listed in the standard and poor 2019s 500 stock index ( 201cs&p 500 index 201d ) and a peer group of companies comprised of cbs corporation class b common stock , scripps network interactive , inc. , time warner , inc. , twenty-first century fox , inc . class a common stock ( news corporation class a common stock prior to june 2013 ) , viacom , inc . class b common stock and the walt disney company . the graph assumes $ 100 originally invested on december 31 , 2012 in each of our series a common stock , series b common stock and series c common stock , the s&p 500 index , and the stock of our peer group companies , including reinvestment of dividends , for the years ended december 31 , 2013 , 2014 , 2015 , 2016 and 2017 . december 31 , december 31 , december 31 , december 31 , december 31 , december 31 .

december 312012: disca: 100
discb: 100
disck: 100
s&p 500: 100
peer group: 100
december 312013: disca: 139.42
discb: 144.61
disck: 143.35
s&p 500: 129.6
peer group: 163.16
december 312014: disca: 106.23
discb: 116.45
disck: 115.28
s&p 500: 144.36
peer group: 186.87
december 312015: disca: 82.27
discb: 85.03
disck: 86.22
s&p 500: 143.31
peer group: 180.1
december 312016: disca: 84.53
discb: 91.7
disck: 91.56
s&p 500: 156.98
peer group: 200.65
december 312017: disca: 69.01
discb: 78.01
disck: 72.38
s&p 500: 187.47
peer group: 208.79

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Questions:
what is the net change in the value of an investment on disca common stock from 2012 to 2017?
what percentage change does this represent?

Answers:
-30.99
-30.99%