{"pre_text": ["notes to consolidated financial statements 2014 ( continued ) ( amounts in millions , except per share amounts ) withholding taxes on temporary differences resulting from earnings for certain foreign subsidiaries which are permanently reinvested outside the u.s .", "it is not practicable to determine the amount of unrecognized deferred tax liability associated with these temporary differences .", "pursuant to the provisions of fasb interpretation no .", "48 , accounting for uncertainty in income taxes ( 201cfin 48 201d ) , the following table summarizes the activity related to our unrecognized tax benefits: ."], "post_text": ["included in the total amount of unrecognized tax benefits of $ 148.8 as of december 31 , 2008 , is $ 131.8 of tax benefits that , if recognized , would impact the effective tax rate and $ 17.1 of tax benefits that , if recognized , would result in adjustments to other tax accounts , primarily deferred taxes .", "the total amount of accrued interest and penalties as of december 31 , 2008 and 2007 is $ 33.5 and $ 33.6 , of which $ 0.7 and $ 9.2 is included in the 2008 and 2007 consolidated statement of operations , respectively .", "in accordance with our accounting policy , interest and penalties accrued on unrecognized tax benefits are classified as income taxes in the consolidated statements of operations .", "we have not elected to change this classification with the adoption of fin 48 .", "with respect to all tax years open to examination by u.s .", "federal and various state , local , and non-u.s .", "tax authorities , we currently anticipate that the total unrecognized tax benefits will decrease by an amount between $ 45.0 and $ 55.0 in the next twelve months , a portion of which will affect the effective tax rate , primarily as a result of the settlement of tax examinations and the lapsing of statutes of limitation .", "this net decrease is related to various items of income and expense , including transfer pricing adjustments and restatement adjustments .", "for this purpose , we expect to complete our discussions with the irs appeals division regarding the years 1997 through 2004 within the next twelve months .", "we also expect to effectively settle , within the next twelve months , various uncertainties for 2005 and 2006 .", "in december 2007 , the irs commenced its examination for the 2005 and 2006 tax years .", "in addition , we have various tax years under examination by tax authorities in various countries , such as the u.k. , and in various states , such as new york , in which we have significant business operations .", "it is not yet known whether these examinations will , in the aggregate , result in our paying additional taxes .", "we have established tax reserves that we believe to be adequate in relation to the potential for additional assessments in each of the jurisdictions in which we are subject to taxation .", "we regularly assess the likelihood of additional tax assessments in those jurisdictions and adjust our reserves as additional information or events require .", "on may 1 , 2007 , the irs completed its examination of our 2003 and 2004 income tax returns and proposed a number of adjustments to our taxable income .", "we have appealed a number of these items .", "in addition , during the second quarter of 2007 , there were net reversals of tax reserves , primarily related to previously unrecognized tax benefits related to various items of income and expense , including approximately $ 80.0 for certain worthless securities deductions associated with investments in consolidated subsidiaries , which was a result of the completion of the tax examination. ."], "table": [["", "2008", "2007"], ["balance at beginning of period", "$ 134.8", "$ 266.9"], ["increases as a result of tax positions taken during a prior year", "22.8", "7.9"], ["decreases as a result of tax positions taken during a prior year", "-21.3 ( 21.3 )", "-156.3 ( 156.3 )"], ["settlements with taxing authorities", "-4.5 ( 4.5 )", "-1.0 ( 1.0 )"], ["lapse of statutes of limitation", "-1.7 ( 1.7 )", "-2.4 ( 2.4 )"], ["increases as a result of tax positions taken during the current year", "18.7", "19.7"], ["balance at end of period", "$ 148.8", "$ 134.8"]], "table_ori": [["", "2008", "2007"], ["Balance at beginning of period", "$134.8", "$266.9"], ["Increases as a result of tax positions taken during a prior year", "22.8", "7.9"], ["Decreases as a result of tax positions taken during a prior year", "(21.3)", "(156.3)"], ["Settlements with taxing authorities", "(4.5)", "(1.0)"], ["Lapse of statutes of limitation", "(1.7)", "(2.4)"], ["Increases as a result of tax positions taken during the current year", "18.7", "19.7"], ["Balance at end of period", "$148.8", "$134.8"]]}

Question: what is the net change in the balance of unrecognized tax benefits during 2008?
Evidence:
table_1: the balance at beginning of period of 2008 is $ 134.8 ; the balance at beginning of period of 2007 is $ 266.9 ;
table_7: the balance at end of period of 2008 is $ 148.8 ; the balance at end of period of 2007 is $ 134.8 ;
Program: subtract(148.8, 134.8)
Answer:
str_answer: 14
exe_answer: 14