american tower corporation and subsidiaries notes to consolidated financial statements 2014 ( continued ) a description of the company 2019s reporting units and the results of the related transitional impairment testing are as follows : verestar 2014verestar was a single segment and reporting unit until december 2002 , when the company committed to a plan to dispose of verestar . the company recorded an impairment charge of $ 189.3 million relating to the impairment of goodwill in this reporting unit . the fair value of this reporting unit was determined based on an independent third party appraisal . network development services 2014as of january 1 , 2002 , the reporting units in the company 2019s network development services segment included kline , specialty constructors , galaxy , mts components and flash technologies . the company estimated the fair value of these reporting units utilizing future discounted cash flows and market information as to the value of each reporting unit on january 1 , 2002 . the company recorded an impairment charge of $ 387.8 million for the year ended december 31 , 2002 related to the impairment of goodwill within these reporting units . such charge included full impairment for all of the goodwill within the reporting units except kline , for which only a partial impairment was recorded . as discussed in note 2 , the assets of all of these reporting units were sold as of december 31 , 2003 , except for those of kline and our tower construction services unit , which were sold in march and november 2004 , respectively . rental and management 2014the company obtained an independent third party appraisal of the rental and management reporting unit that contains goodwill and determined that goodwill was not impaired . the company 2019s other intangible assets subject to amortization consist of the following as of december 31 , ( in thousands ) : .

2004: acquired customer base and network location intangibles: 1369607
deferred financing costs: 89736
acquired licenses and other intangibles: 43404
total: 1502747
less accumulated amortization: -517444
other intangible assets net: 985303
2003: acquired customer base and network location intangibles: 1299521
deferred financing costs: 111484
acquired licenses and other intangibles: 43125
total: 1454130
less accumulated amortization: -434381
other intangible assets net: 1019749

the company amortizes its intangible assets over periods ranging from three to fifteen years . amortization of intangible assets for the years ended december 31 , 2004 and 2003 aggregated approximately $ 97.8 million and $ 94.6 million , respectively ( excluding amortization of deferred financing costs , which is included in interest expense ) . the company expects to record amortization expense of approximately $ 97.8 million , $ 95.9 million , $ 92.0 million , $ 90.5 million and $ 88.8 million , respectively , for the years ended december 31 , 2005 , 2006 , 2007 , 2008 and 2009 , respectively . 5 . notes receivable in 2000 , the company loaned tv azteca , s.a . de c.v . ( tv azteca ) , the owner of a major national television network in mexico , $ 119.8 million . the loan , which initially bore interest at 12.87% ( 12.87 % ) , payable quarterly , was discounted by the company , as the fair value interest rate at the date of the loan was determined to be 14.25% ( 14.25 % ) . the loan was amended effective january 1 , 2003 to increase the original interest rate to 13.11% ( 13.11 % ) . as of december 31 , 2004 , and 2003 , approximately $ 119.8 million undiscounted ( $ 108.2 million discounted ) under the loan was outstanding and included in notes receivable and other long-term assets in the accompanying consolidated balance sheets . the term of the loan is seventy years ; however , the loan may be prepaid by tv .

Questions:
what was the change in the amortization expense from 2007 to 2008?
and how much does this change represent in relation to that amortization expense in 2007, in percentage?

Answers:
3.9
4.2%