{"pre_text": ["to determine stock-based compensation expense , the grant date fair value is applied to the options granted with a reduction for estimated forfeitures .", "we recognize compensation expense for stock options on a straight-line basis over the specified vesting period .", "at december 31 , 2013 and 2012 , options for 10204000 and 12759000 shares of common stock were exercisable at a weighted-average price of $ 89.46 and $ 90.86 , respectively .", "the total intrinsic value of options exercised during 2014 , 2013 and 2012 was $ 90 million , $ 86 million and $ 37 million , respectively .", "cash received from option exercises under all incentive plans for 2014 , 2013 and 2012 was approximately $ 215 million , $ 208 million and $ 118 million , respectively .", "the tax benefit realized from option exercises under all incentive plans for 2014 , 2013 and 2012 was approximately $ 33 million , $ 31 million and $ 14 million , respectively .", "shares of common stock available during the next year for the granting of options and other awards under the incentive plans were 17997353 at december 31 , 2014 .", "total shares of pnc common stock authorized for future issuance under equity compensation plans totaled 19017057 shares at december 31 , 2014 , which includes shares available for issuance under the incentive plans and the employee stock purchase plan ( espp ) as described below .", "during 2014 , we issued approximately 2.4 million shares from treasury stock in connection with stock option exercise activity .", "as with past exercise activity , we currently intend to utilize primarily treasury stock for any future stock option exercises .", "awards granted to non-employee directors in 2014 , 2013 and 2012 include 21490 , 27076 and 25620 deferred stock units , respectively , awarded under the outside directors deferred stock unit plan .", "a deferred stock unit is a phantom share of our common stock , which is accounted for as a liability until such awards are paid to the participants in cash .", "as there are no vesting or service requirements on these awards , total compensation expense is recognized in full for these awards on the date of grant .", "incentive/performance unit share awards and restricted stock/share unit awards the fair value of nonvested incentive/performance unit share awards and restricted stock/share unit awards is initially determined based on prices not less than the market value of our common stock on the date of grant .", "the value of certain incentive/performance unit share awards is subsequently remeasured based on the achievement of one or more financial and other performance goals .", "the personnel and compensation committee ( 201cp&cc 201d ) of the board of directors approves the final award payout with respect to certain incentive/performance unit share awards .", "these awards have either a three-year or a four-year performance period and are payable in either stock or a combination of stock and cash .", "restricted stock/share unit awards have various vesting periods generally ranging from 3 years to 5 years .", "beginning in 2013 , we incorporated several enhanced risk- related performance changes to certain long-term incentive compensation programs .", "in addition to achieving certain financial performance metrics on both an absolute basis and relative to our peers , final payout amounts will be subject to reduction if pnc fails to meet certain risk-related performance metrics as specified in the award agreements .", "however , the p&cc has the discretion to waive any or all of this reduction under certain circumstances .", "the weighted-average grant date fair value of incentive/ performance unit share awards and restricted stock/unit awards granted in 2014 , 2013 and 2012 was $ 80.79 , $ 64.77 and $ 60.68 per share , respectively .", "the total fair value of incentive/performance unit share and restricted stock/unit awards vested during 2014 , 2013 and 2012 was approximately $ 119 million , $ 63 million and $ 55 million , respectively .", "we recognize compensation expense for such awards ratably over the corresponding vesting and/or performance periods for each type of program .", "table 121 : nonvested incentive/performance unit share awards and restricted stock/share unit awards 2013 rollforward shares in thousands nonvested incentive/ performance unit shares weighted- average grant date fair value nonvested restricted stock/ weighted- average grant date fair value ."], "post_text": ["the pnc financial services group , inc .", "2013 form 10-k 185 ."], "table": [["shares in thousands december 31 2013", "nonvested incentive/ performance unit shares 1647", "weighted-averagegrant datefair value $ 63.49", "nonvested restricted stock/ share units 3483", "weighted-averagegrant datefair value $ 62.70"], ["granted", "723", "79.90", "1276", "81.29"], ["vested/released", "-513 ( 513 )", "63.64", "-962 ( 962 )", "62.32"], ["forfeited", "-20 ( 20 )", "69.18", "-145 ( 145 )", "69.44"], ["december 31 2014", "1837", "$ 69.84", "3652", "$ 69.03"]], "table_ori": [["Shares in thousands", "Nonvested Incentive/ Performance Unit Shares", "Weighted-AverageGrant DateFair Value", "Nonvested Restricted Stock/ Share Units", "Weighted-AverageGrant DateFair Value"], ["December 31, 2013", "1,647", "$63.49", "3,483", "$62.70"], ["Granted", "723", "79.90", "1,276", "81.29"], ["Vested/Released", "(513)", "63.64", "(962)", "62.32"], ["Forfeited", "(20)", "69.18", "(145)", "69.44"], ["December 31, 2014", "1,837", "$69.84", "3,652", "$69.03"]]}

Question: in shares in thousands , for the non-vested incentive/ performance unit shares , what was the change in balance between december 31 2013 and december 31 2014?
Evidence:
table_4: shares in thousands december 31 2013 the december 31 2014 of nonvested incentive/ performance unit shares 1647 is 1837 ; the december 31 2014 of weighted-averagegrant datefair value $ 63.49 is $ 69.84 ; the december 31 2014 of nonvested restricted stock/ share units 3483 is 3652 ; the december 31 2014 of weighted-averagegrant datefair value $ 62.70 is $ 69.03 ;
Program: subtract(1837, 1647)
Answer:
str_answer: 190
exe_answer: 190