what percentage of the total number of shares purchased were purchased in december?
five-year performance comparison 2013 the following graph provides an indicator of cumulative total shareholder returns for the corporation as compared to the peer group index ( described above ) , the dj trans , and the s&p 500 . the graph assumes that $ 100 was invested in the common stock of union pacific corporation and each index on december 31 , 2011 and that all dividends were reinvested . the information below is historical in nature and is not necessarily indicative of future performance . purchases of equity securities 2013 during 2016 , we repurchased 35686529 shares of our common stock at an average price of $ 88.36 . the following table presents common stock repurchases during each month for the fourth quarter of 2016 : period total number of shares purchased [a] average price paid per share total number of shares purchased as part of a publicly announced plan or program [b] maximum number of shares remaining under the plan or program [b] .

| Period | Total Number of Shares Purchased [a] | Average Price Paid Per Share | Total Number of Shares Purchased as Part of a Publicly AnnouncedPlan or Program [b] | Maximum Number of Shares Remaining Under the Plan or Program [b] |
| :--- | :--- | :--- | :--- | :--- |
| Oct. 1 through Oct. 31 | 3,501,308 | $92.89 | 3,452,500 | 23,769,426 |
| Nov. 1 through Nov. 30 | 2,901,167 | 95.68 | 2,876,067 | 20,893,359 |
| Dec. 1 through Dec. 31 | 3,296,652 | 104.30 | 3,296,100 | 17,597,259 |
| Total | 9,699,127 | $97.60 | 9,624,667 | N/A |

[a] total number of shares purchased during the quarter includes approximately 74460 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares . [b] effective january 1 , 2014 , our board of directors authorized the repurchase of up to 120 million shares of our common stock by december 31 , 2017 . these repurchases may be made on the open market or through other transactions . our management has sole discretion with respect to determining the timing and amount of these transactions . on november 17 , 2016 , our board of directors approved the early renewal of the share repurchase program , authorizing the repurchase of up to 120 million shares of our common stock by december 31 , 2020 . the new authorization was effective january 1 , 2017 , and replaces the previous authorization , which expired on december 31 , 2016. .

shares_purchased = 3296652
shares_total = 9699127
percent_december = shares_purchased / shares_total
answer = percent_december * 100