what percentage of revenue net of interest expense is due to net interest revenue in 2010?
special asset pool special asset pool ( sap ) , which constituted approximately 22% ( 22 % ) of citi holdings by assets as of december 31 , 2010 , is a portfolio of securities , loans and other assets that citigroup intends to actively reduce over time through asset sales and portfolio run-off . at december 31 , 2010 , sap had $ 80 billion of assets . sap assets have declined by $ 248 billion , or 76% ( 76 % ) , from peak levels in 2007 reflecting cumulative write-downs , asset sales and portfolio run-off . in millions of dollars 2010 2009 2008 % (  % ) change 2010 vs . 2009 % (  % ) change 2009 vs . 2008 .

| In millions of dollars | 2010 | 2009 | 2008 | % Change 2010 vs. 2009 | % Change 2009 vs. 2008 |
| :--- | :--- | :--- | :--- | :--- | :--- |
| Net interest revenue | $1,219 | $2,754 | $2,676 | (56)% | 3% |
| Non-interest revenue | 1,633 | (6,014) | (42,375) | NM | 86 |
| Revenues, net of interest expense | $2,852 | $(3,260) | $(39,699) | NM | 92% |
| Total operating expenses | $548 | $824 | $893 | (33)% | (8)% |
| Net credit losses | $2,013 | $5,399 | $906 | (63)% | NM |
| Provision (releases) for unfunded lending commitments | (76) | 111 | (172) | NM | NM |
| Credit reserve builds (releases) | (1,711) | (530) | 2,677 | NM | NM |
| Provisions for credit losses and for benefits and claims | $226 | $4,980 | $3,411 | (95)% | 46% |
| Income (loss) from continuing operations before taxes | $2,078 | $(9,064) | $(44,003) | NM | 79% |
| Income taxes (benefits) | 905 | (3,695) | (16,714) | NM | 78 |
| Net income (loss) from continuing operations | $1,173 | $(5,369) | $(27,289) | NM | 80% |
| Net income (loss) attributable to noncontrolling interests | 188 | (16) | (205) | NM | 92 |
| Net income (loss) | $985 | $(5,353) | $(27,084) | NM | 80% |
| EOP assets(in billions of dollars) | $80 | $136 | $219 | (41)% | (38)% |

nm not meaningful 2010 vs . 2009 revenues , net of interest expense increased $ 6.1 billion , primarily due to the improvement of revenue marks in 2010 . aggregate marks were negative $ 2.6 billion in 2009 as compared to positive marks of $ 3.4 billion in 2010 ( see 201citems impacting sap revenues 201d below ) . revenue in the current year included positive marks of $ 2.0 billion related to sub-prime related direct exposure , a positive $ 0.5 billion cva related to the monoline insurers , and $ 0.4 billion on private equity positions . these positive marks were partially offset by negative revenues of $ 0.5 billion on alt-a mortgages and $ 0.4 billion on commercial real estate . operating expenses decreased 33% ( 33 % ) in 2010 , mainly driven by the absence of the u.s . government loss-sharing agreement , lower compensation , and lower transaction expenses . provisions for credit losses and for benefits and claims decreased $ 4.8 billion due to a decrease in net credit losses of $ 3.4 billion and a higher release of loan loss reserves and unfunded lending commitments of $ 1.4 billion . assets declined 41% ( 41 % ) from the prior year , primarily driven by sales and amortization and prepayments . asset sales of $ 39 billion for the year of 2010 generated pretax gains of approximately $ 1.3 billion . 2009 vs . 2008 revenues , net of interest expense increased $ 36.4 billion in 2009 , primarily due to the absence of significant negative revenue marks occurring in the prior year . total negative marks were $ 2.6 billion in 2009 as compared to $ 37.4 billion in 2008 . revenue in 2009 included positive marks of $ 0.8 billion on subprime-related direct exposures . these positive revenues were partially offset by negative revenues of $ 1.5 billion on alt-a mortgages , $ 0.8 billion of write-downs on commercial real estate , and a negative $ 1.6 billion cva on the monoline insurers and fair value option liabilities . revenue was also affected by negative marks on private equity positions and write-downs on highly leveraged finance commitments . operating expenses decreased 8% ( 8 % ) in 2009 , mainly driven by lower compensation and lower volumes and transaction expenses , partially offset by costs associated with the u.s . government loss-sharing agreement exited in the fourth quarter of 2009 . provisions for credit losses and for benefits and claims increased $ 1.6 billion , primarily driven by $ 4.5 billion in increased net credit losses , partially offset by a lower provision for loan losses and unfunded lending commitments of $ 2.9 billion . assets declined 38% ( 38 % ) versus the prior year , primarily driven by amortization and prepayments , sales , marks and charge-offs. .

interest_revenue = 1219
non_interest_revenue = 2852
interest_revenue_percent = interest_revenue / non_interest_revenue
answer = interest_revenue_percent * 100