note 9 .
commitments and contingencies operating leases we are obligated under noncancelable operating leases for corporate office space , warehouse and distribution facilities , trucks and certain equipment .
the future minimum lease commitments under these leases at december 31 , 2009 are as follows ( in thousands ) : years ending december 31: .

2010
$55,178
2011
45,275
2012
36,841
2013
30,789
2014
22,094
Thereafter
59,263
Future Minimum Lease Payments
$249,440

rental expense for operating leases was approximately $ 57.2 million , $ 49.0 million and $ 26.6 million during the years ended december 31 , 2009 , 2008 and 2007 , respectively .
we guarantee the residual values of the majority of our truck and equipment operating leases .
the residual values decline over the lease terms to a defined percentage of original cost .
in the event the lessor does not realize the residual value when a piece of equipment is sold , we would be responsible for a portion of the shortfall .
similarly , if the lessor realizes more than the residual value when a piece of equipment is sold , we would be paid the amount realized over the residual value .
had we terminated all of our operating leases subject to these guarantees at december 31 , 2009 , the guaranteed residual value would have totaled approximately $ 27.8 million .
litigation and related contingencies in december 2005 and may 2008 , ford global technologies , llc filed complaints with the international trade commission against us and others alleging that certain aftermarket parts imported into the u.s .
infringed on ford design patents .
the parties settled these matters in april 2009 pursuant to a settlement arrangement that expires in september 2011 .
pursuant to the settlement , we ( and our designees ) became the sole distributor in the united states of aftermarket automotive parts that correspond to ford collision parts that are covered by a united states design patent .
we have paid ford an upfront fee for these rights and will pay a royalty for each such part we sell .
the amortization of the upfront fee and the royalty expenses are reflected in cost of goods sold on the accompanying consolidated statements of income .
we also have certain other contingencies resulting from litigation , claims and other commitments and are subject to a variety of environmental and pollution control laws and regulations incident to the ordinary course of business .
we currently expect that the resolution of such contingencies will not materially affect our financial position , results of operations or cash flows .
note 10 .
business combinations on october 1 , 2009 , we acquired greenleaf auto recyclers , llc ( 201cgreenleaf 201d ) from ssi for $ 38.8 million , net of cash acquired .
greenleaf is the entity through which ssi operated its late model automotive parts recycling business .
we recorded a gain on bargain purchase for the greenleaf acquisition totaling $ 4.3 million , which is .

Question: Analyse this data from a financial earnings document. what was the percentage change in rental expense for operating leases from 2008 to 2009?
Choices:
0.14336
167.34694
0.16735
-0.16735
354132.56098
Correct choice index: 2