pre_text: corporate/other corporate/other includes global staff functions ( includes finance , risk , human resources , legal and compliance ) and other corporate expense , global operations and technology ( o&t ) , residual corporate treasury and corporate items . at december 31 , 2009 , this segment had approximately $ 230 billion of assets , consisting primarily of the company 2019s liquidity portfolio , including $ 110 billion of cash and cash equivalents. .
post_text: 2009 vs . 2008 revenues , net of interest expense declined , primarily due to the pretax loss on debt extinguishment related to the repayment of the $ 20 billion of tarp trust preferred securities and the pretax loss in connection with the exit from the loss-sharing agreement with the u.s . government . revenues also declined , due to the absence of the 2008 sale of citigroup global services limited recorded in o&t . this was partially offset by a pretax gain related to the exchange offers , revenues and higher intersegment eliminations . operating expenses increased , primarily due to intersegment eliminations and increases in compensation , partially offset by lower repositioning reserves . 2008 vs . 2007 revenues , net of interest expense increased primarily due to the gain in 2007 on the sale of certain corporate-owned assets and higher intersegment eliminations , partially offset by improved treasury hedging activities . operating expenses declined , primarily due to lower restructuring charges in 2008 as well as reductions in incentive compensation and benefits expense. .
table: In millions of dollars 2009 2008 2007
table: Net interest revenue $(1,663) $(2,680) $(2,008)
table: Non-interest revenue (8,893) 422 (302)
table: Total revenues, net of interest expense $(10,556) $(2,258) $(2,310)
table: Total operating expenses $1,420 $510 $1,813
table: Provisions for loan losses and for benefits and claims (1) 1 (3)
table: (Loss) from continuing operations before taxes $(11,975) $(2,769) $(4,120)
table: Income taxes (benefits) (4,369) (587) (1,446)
table: (Loss) from continuing operations $(7,606) $(2,182) $(2,674)
table: Income (loss) from discontinued operations, net of taxes (445) 4,002 708
table: Net income (loss) before attribution of noncontrolling interests $(8,051) $1,820 $(1,966)
table: Net income attributable to noncontrolling interests — — 2
table: Net income (loss) $(8,051) $1,820 $(1,968)
question: Analyse this data from a financial earnings document. what was the percentage change in total operating expenses between 2007 and 2008?