14 .
stock compensation plans the following table summarizes stock-based compensation expense recognized in continuing operations in the consolidated statements of income in compensation and benefits ( in millions ) : .

Years ended December 31
2009
2008
2007
RSUs
$124
$132
$109
Performance plans
60
67
54
Stock options
21
24
22
Employee stock purchase plans
4
3
3
Total stock-based compensation expense
209
226
188
Tax benefit
68
82
64
Stock-based compensation expense, net of tax
$141
$144
$124

during 2009 , the company converted its stock administration system to a new service provider .
in connection with this conversion , a reconciliation of the methodologies and estimates utilized was performed , which resulted in a $ 12 million reduction of expense for the year ended december 31 , 2009 .
stock awards stock awards , in the form of rsus , are granted to certain employees and consist of both performance-based and service-based rsus .
service-based awards generally vest between three and ten years from the date of grant .
the fair value of service-based awards is based upon the market price of the underlying common stock at the date of grant .
with certain limited exceptions , any break in continuous employment will cause the forfeiture of all unvested awards .
compensation expense associated with stock awards is recognized over the service period using the straight-line method .
dividend equivalents are paid on certain service-based rsus , based on the initial grant amount .
at december 31 , 2009 , 2008 and 2007 , the number of shares available for stock awards is included with options available for grant .
performance-based rsus have been granted to certain employees .
vesting of these awards is contingent upon meeting various individual , divisional or company-wide performance conditions , including revenue generation or growth in revenue , pretax income or earnings per share over a one- to five-year period .
the performance conditions are not considered in the determination of the grant date fair value for these awards .
the fair value of performance-based awards is based upon the market price of the underlying common stock at the date of grant .
compensation expense is recognized over the performance period , and in certain cases an additional vesting period , based on management 2019s estimate of the number of units expected to vest .
compensation expense is adjusted to reflect the actual number of shares paid out at the end of the programs .
the payout of shares under these performance-based plans may range from 0-200% ( 0-200 % ) of the number of units granted , based on the plan .
dividend equivalents are generally not paid on the performance-based rsus .
during 2009 , the company granted approximately 2 million shares in connection with the completion of the 2006 leadership performance plan ( 2018 2018lpp 2019 2019 ) cycle .
during 2009 , 2008 and 2007 , the company granted approximately 3.7 million , 4.2 million and 4.3 million restricted shares , respectively , in connection with the company 2019s incentive compensation plans. .

Question: Analyse this data from a financial earnings document. what was the change in the stock compensation plans total stock-based compensation expense in millions from 2007 to 2008
Choices:
0
38.0
3800
21
166
Correct choice index: 1