what was the percent of the number of shares purchased in october 1 - 31 2017 as part of the 2017 total
table of contents celanese purchases of its equity securities information regarding repurchases of our common stock during the three months ended december 31 , 2017 is as follows : period number of shares purchased ( 1 ) average price paid per share total number of shares purchased as part of publicly announced program approximate dollar value of shares remaining that may be purchased under the program ( 2 ) .

| Period | TotalNumberof SharesPurchased<sup>(1)</sup> | AveragePrice Paidper Share | Total Numberof SharesPurchased asPart of PubliclyAnnounced Program | ApproximateDollarValue of SharesRemaining thatmay bePurchased Underthe Program<sup>(2)</sup> |
| :--- | :--- | :--- | :--- | :--- |
| October 1 - 31, 2017 | 10,676 | $104.10 | — | $1,531,000,000 |
| November 1 - 30, 2017 | 924 | $104.02 | — | $1,531,000,000 |
| December 1 - 31, 2017 | 38,605 | $106.36 | — | $1,531,000,000 |
| Total | 50,205 |  | — |  |

___________________________ ( 1 ) represents shares withheld from employees to cover their statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock units . ( 2 ) our board of directors has authorized the aggregate repurchase of $ 3.9 billion of our common stock since february 2008 , including an increase of $ 1.5 billion on july 17 , 2017 . see note 17 - stockholders' equity in the accompanying consolidated financial statements for further information. .

shares_purchased = 10676
shares_total = 50205
percent_october = shares_purchased / shares_total
answer = percent_october * 100