{"pre_text": ["we recorded liabilities for certain litigation settlements in prior periods .", "total liabilities for litigation settlements changed from december 31 , 2006 , as follows : ( in millions ) ."], "post_text": ["* note that table may not sum due to rounding .", "contribution expense 2014foundation in may 2006 , in conjunction with our initial public offering ( 201cipo 201d ) , we issued 13496933 shares of our class a common stock as a donation to the foundation that is incorporated in canada and controlled by directors who are independent of us and our customers .", "the foundation builds on mastercard 2019s existing charitable giving commitments by continuing to support programs and initiatives that help children and youth to access education , understand and utilize technology , and develop the skills necessary to succeed in a diverse and global work force .", "the vision of the foundation is to make the economy work for everybody by advancing innovative programs in areas of microfinance and youth education .", "in connection with the donation of the class a common stock , we recorded an expense of $ 395 million which was equal to the aggregate value of the shares we donated .", "in both 2007 and 2006 , we recorded expenses of $ 20 million for cash donations we made to the foundation , completing our intention , announced at the time of the ipo , to donate approximately $ 40 million in cash to the foundation in support of its operating expenses and charitable disbursements for the first four years of its operations .", "we may make additional cash contributions to the foundation in the future .", "the cash and stock donations to the foundation are generally not deductible by mastercard for tax purposes .", "as a result of this difference between the financial statement and tax treatments of the donations , our effective income tax rate for the year ended december 31 , 2006 is significantly higher than our effective income tax rates for 2007 and 2008 .", "depreciation and amortization depreciation and amortization expenses increased $ 14 million in 2008 and decreased $ 2 million in 2007 .", "the increase in depreciation and amortization expense in 2008 is primarily due to increased investments in leasehold and building improvements , data center equipment and capitalized software .", "the decrease in depreciation and amortization expense in 2007 was primarily related to certain assets becoming fully depreciated .", "depreciation and amortization will increase as we continue to invest in leasehold and building improvements , data center equipment and capitalized software. ."], "table": [["balance as of december 31 2006", "$ 477"], ["provision for litigation settlements ( note 20 )", "3"], ["interest accretion on u.s . merchant lawsuit", "38"], ["payments", "-114 ( 114 )"], ["balance as of december 31 2007", "$ 404"], ["provision for discover settlement", "863"], ["provision for american express settlement", "1649"], ["provision for other litigation settlements", "6"], ["interest accretion on u.s . merchant lawsuit", "33"], ["interest accretion on american express settlement", "44"], ["payments on american express settlement", "-300 ( 300 )"], ["payments on discover settlement", "-863 ( 863 )"], ["payment on u.s . merchant lawsuit", "-100 ( 100 )"], ["other payments and accretion", "-1 ( 1 )"], ["balance as of december 31 2008", "$ 1736"]], "table_ori": [["Balance as of December 31, 2006", "$477"], ["Provision for litigation settlements (Note 20)", "3"], ["Interest accretion on U.S. Merchant Lawsuit", "38"], ["Payments", "(114)"], ["Balance as of December 31, 2007", "$404"], ["Provision for Discover Settlement", "863"], ["Provision for American Express Settlement", "1,649"], ["Provision for other litigation settlements", "6"], ["Interest accretion on U.S. Merchant Lawsuit", "33"], ["Interest accretion on American Express Settlement", "44"], ["Payments on American Express Settlement", "(300)"], ["Payments on Discover Settlement", "(863)"], ["Payment on U.S. Merchant Lawsuit", "(100)"], ["Other payments and accretion", "(1)"], ["Balance as of December 31, 2008", "$1,736"]]}

Question: what is the net change in the balance of total liabilities for litigation settlements during 2007?
Evidence:
table_4: balance as of december 31 2006 the balance as of december 31 2007 of $ 477 is $ 404 ;
Program: subtract(404, 477)
Answer:
str_answer: -73
exe_answer: -73