american tower corporation and subsidiaries notes to consolidated financial statements 2014 ( continued ) company is currently unable to estimate the impact of the amount of such changes , if any , to previously recorded uncertain tax positions . a reconciliation of the beginning and ending amount of unrecognized tax benefits for the year ending december 31 , 2007 is as follows ( in thousands ) : .

$ 183953: additions based on tax positions related to the current year: 2598
additions for tax positions of prior years: 5412
reductions for tax positions of prior years: -120016
cash advance in connection with proposed settlement: -6682
settlements with taxing authorities: -5372
reductions as a result of the lapse of statute of limitations: -669
balance as of december 31 2007: 59224

during the year ended december 31 , 2007 , the company recorded penalties and tax-related interest income of $ 2.5 million and interest income from tax refunds of $ 1.5 million for the year ended december 31 , 2007 . as of december 31 , 2007 and january 1 , 2007 , the total unrecognized tax benefits included in other long-term liabilities in the consolidated balance sheets was $ 29.6 million and $ 34.3 million , respectively . as of december 31 , 2007 and january 1 , 2007 , the total amount of accrued income tax-related interest and penalties included in other long-term liabilities in the consolidated balance sheets was $ 30.7 million and $ 33.2 million , respectively . in the fourth quarter of 2007 , the company entered into a tax amnesty program with the mexican tax authority . as of december 31 , 2007 , the company had met all of the administrative requirements of the program , which enabled the company to recognize certain tax benefits . this was confirmed by the mexican tax authority on february 5 , 2008 . these benefits include a reduction of uncertain tax benefits of $ 5.4 million along with penalties and interest of $ 12.5 million related to 2002 , all of which reduced income tax expense . in connection with the above program , the company paid $ 6.7 million to the mexican tax authority as a settlement offer for other uncertain tax positions related to 2003 and 2004 . this offer is currently under review by the mexican tax authority ; the company cannot yet determine the specific timing or the amount of any potential settlement . during 2007 , the statute of limitations on certain unrecognized tax benefits lapsed , which resulted in a $ 0.7 million decrease in the liability for uncertain tax benefits , all of which reduced the income tax provision . the company files numerous consolidated and separate income tax returns , including u.s . federal and state tax returns and foreign tax returns in mexico and brazil . as a result of the company 2019s ability to carry forward federal and state net operating losses , the applicable tax years remain open to examination until three years after the applicable loss carryforwards have been used or expired . however , the company has completed u.s . federal income tax examinations for tax years up to and including 2002 . the company is currently undergoing u.s . federal income tax examinations for tax years 2004 and 2005 . additionally , it is subject to examinations in various u.s . state jurisdictions for certain tax years , and is under examination in brazil for the 2001 through 2006 tax years and mexico for the 2002 tax year . sfas no . 109 , 201caccounting for income taxes , 201d requires that companies record a valuation allowance when it is 201cmore likely than not that some portion or all of the deferred tax assets will not be realized . 201d at december 31 , 2007 , the company has provided a valuation allowance of approximately $ 88.2 million , including approximately .

Questions:
what was the change in the total amount of accrued income tax-related interest and penalties included in other long-term liabilities during 2007?
and how much does that change represent in relation to that total amount in the beginning of the year, in percentage?

Answers:
-2.5
-7.5%