citigroup 2019s repurchases are primarily from government sponsored entities . the specific representations and warranties made by the company depend on the nature of the transaction and the requirements of the buyer . market conditions and credit-ratings agency requirements may also affect representations and warranties and the other provisions the company may agree to in loan sales . in the event of a breach of the representations and warranties , the company may be required to either repurchase the mortgage loans ( generally at unpaid principal balance plus accrued interest ) with the identified defects or indemnify ( 201cmake-whole 201d ) the investor or insurer . the company has recorded a repurchase reserve that is included in other liabilities in the consolidated balance sheet . in the case of a repurchase , the company will bear any subsequent credit loss on the mortgage loans . the company 2019s representations and warranties are generally not subject to stated limits in amount or time of coverage . however , contractual liability arises only when the representations and warranties are breached and generally only when a loss results from the breach . in the case of a repurchase , the loan is typically considered a credit- impaired loan and accounted for under sop 03-3 , 201caccounting for certain loans and debt securities , acquired in a transfer 201d ( now incorporated into asc 310-30 , receivables 2014loans and debt securities acquired with deteriorated credit quality ) . these repurchases have not had a material impact on nonperforming loan statistics , because credit-impaired purchased sop 03-3 loans are not included in nonaccrual loans . the company estimates its exposure to losses from its obligation to repurchase previously sold loans based on the probability of repurchase or make-whole and an estimated loss given repurchase or make-whole . this estimate is calculated separately by sales vintage ( i.e. , the year the loans were sold ) based on a combination of historical trends and forecasted repurchases and losses considering the : ( 1 ) trends in requests by investors for loan documentation packages to be reviewed ; ( 2 ) trends in recent repurchases and make-wholes ; ( 3 ) historical percentage of claims made as a percentage of loan documentation package requests ; ( 4 ) success rate in appealing claims ; ( 5 ) inventory of unresolved claims ; and ( 6 ) estimated loss given repurchase or make-whole , including the loss of principal , accrued interest , and foreclosure costs . the company does not change its estimation methodology by counterparty , but the historical experience and trends are considered when evaluating the overall reserve . the request for loan documentation packages is an early indicator of a potential claim . during 2009 , loan documentation package requests and the level of outstanding claims increased . in addition , our loss severity estimates increased during 2009 due to the impact of macroeconomic factors and recent experience . these factors contributed to a $ 493 million change in estimate for this reserve in 2009 . as indicated above , the repurchase reserve is calculated by sales vintage . the majority of the repurchases in 2009 were from the 2006 and 2007 sales vintages , which also represent the vintages with the largest loss- given-repurchase . an insignificant percentage of 2009 repurchases were from vintages prior to 2006 , and this is expected to decrease , because those vintages are later in the credit cycle . although early in the credit cycle , the company has experienced improved repurchase and loss-given-repurchase statistics from the 2008 and 2009 vintages . in the case of a repurchase of a credit-impaired sop 03-3 loan ( now incorporated into asc 310-30 ) , the difference between the loan 2019s fair value and unpaid principal balance at the time of the repurchase is recorded as a utilization of the repurchase reserve . payments to make the investor whole are also treated as utilizations and charged directly against the reserve . the provision for estimated probable losses arising from loan sales is recorded as an adjustment to the gain on sale , which is included in other revenue in the consolidated statement of income . a liability for representations and warranties is estimated when the company sells loans and is updated quarterly . any subsequent adjustment to the provision is recorded in other revenue in the consolidated statement of income . the activity in the repurchase reserve for the years ended december 31 , 2009 and 2008 is as follows: .

2009: balance beginning of the year: 75
additions for new sales: 33
change in estimate: 493
utilizations: -119
balance end of the year: 482
2008: balance beginning of the year: 2
additions for new sales: 23
change in estimate: 59
utilizations: -9
balance end of the year: 75

goodwill goodwill represents an acquired company 2019s acquisition cost over the fair value of net tangible and intangible assets acquired . goodwill is subject to annual impairment tests , whereby goodwill is allocated to the company 2019s reporting units and an impairment is deemed to exist if the carrying value of a reporting unit exceeds its estimated fair value . furthermore , on any business dispositions , goodwill is allocated to the business disposed of based on the ratio of the fair value of the business disposed of to the fair value of the reporting unit . intangible assets intangible assets 2014including core deposit intangibles , present value of future profits , purchased credit card relationships , other customer relationships , and other intangible assets , but excluding msrs 2014are amortized over their estimated useful lives . intangible assets deemed to have indefinite useful lives , primarily certain asset management contracts and trade names , are not amortized and are subject to annual impairment tests . an impairment exists if the carrying value of the indefinite-lived intangible asset exceeds its fair value . for other intangible assets subject to amortization , an impairment is recognized if the carrying amount is not recoverable and exceeds the fair value of the intangible asset . other assets and other liabilities other assets include , among other items , loans held-for-sale , deferred tax assets , equity-method investments , interest and fees receivable , premises and equipment , end-user derivatives in a net receivable position , repossessed assets , and other receivables. .

Questions:
what was the change in estimate in 2009?
and what was it in 2008?
how much, then, did the 2009 change represent in relation to this 2008 one?
and in that same two year period, what was the variation of the additions for new sales of the repurchase reserve?
and what were those additions in 2008?
what percentage, then, does that change represent in relation to this 2008 amount?

Answers:
493
59
8.35
10
23
43.5%