{"pre_text": ["fair valuation the following table shows the expected versus actual rate of return on plan assets for the u.s .", "pension and postretirement plans: ."], "post_text": ["for the foreign plans , pension expense for 2008 was reduced by the expected return of $ 487 million , compared with the actual return of $ ( 883 ) million .", "pension expense for 2007 and 2006 was reduced by expected returns of $ 477 million and $ 384 million , respectively .", "actual returns were higher in 2007 and 2006 than the expected returns in those years .", "discount rate the 2008 and 2007 discount rates for the u.s .", "pension and postretirement plans were selected by reference to a citigroup-specific analysis using each plan 2019s specific cash flows and compared with the moody 2019s aa long-term corporate bond yield for reasonableness .", "citigroup 2019s policy is to round to the nearest tenth of a percent .", "accordingly , at december 31 , 2008 , the discount rate was set at 6.1% ( 6.1 % ) for the pension plans and at 6.0% ( 6.0 % ) for the postretirement welfare plans .", "at december 31 , 2007 , the discount rate was set at 6.2% ( 6.2 % ) for the pension plans and 6.0% ( 6.0 % ) for the postretirement plans , referencing a citigroup-specific cash flow analysis .", "as of september 30 , 2006 , the u.s .", "pension plan was remeasured to reflect the freeze of benefits accruals for all non-grandfathered participants , effective january 1 , 2008 .", "under the september 30 , 2006 remeasurement and year-end analysis , the resulting plan-specific discount rate for the pension plan was 5.86% ( 5.86 % ) , which was rounded to 5.9% ( 5.9 % ) .", "the discount rates for the foreign pension and postretirement plans are selected by reference to high-quality corporate bond rates in countries that have developed corporate bond markets .", "however , where developed corporate bond markets do not exist , the discount rates are selected by reference to local government bond rates with a premium added to reflect the additional risk for corporate bonds .", "for additional information on the pension and postretirement plans , and on discount rates used in determining pension and postretirement benefit obligations and net benefit expense for the company 2019s plans , as well as the effects of a one percentage-point change in the expected rates of return and the discount rates , see note 9 to the company 2019s consolidated financial statements on page 144 .", "adoption of sfas 158 upon the adoption of sfas no .", "158 , employer 2019s accounting for defined benefit pensions and other postretirement benefits ( sfas 158 ) , at december 31 , 2006 , the company recorded an after-tax charge to equity of $ 1.6 billion , which corresponds to the plans 2019 net pension and postretirement liabilities and the write-off of the existing prepaid asset , which relates to unamortized actuarial gains and losses , prior service costs/benefits and transition assets/liabilities .", "for a discussion of fair value of assets and liabilities , see 201csignificant accounting policies and significant estimates 201d on page 18 and notes 26 , 27 and 28 to the consolidated financial statements on pages 192 , 202 and 207. ."], "table": [["", "2008", "2007", "2006"], ["expected rate of return", "7.75% ( 7.75 % )", "8.0% ( 8.0 % )", "8.0% ( 8.0 % )"], ["actual rate of return", "( 5.42 ) % (  % )", "13.2% ( 13.2 % )", "14.7% ( 14.7 % )"]], "table_ori": [["", "2008", "2007", "2006"], ["Expected rate of return", "7.75%", "8.0%", "8.0%"], ["Actual rate of return", "(5.42)%", "13.2%", "14.7%"]]}

Question: what was the percentage increase of the expected return from 2007 to 2008
Evidence:
text_2: for the foreign plans , pension expense for 2008 was reduced by the expected return of $ 487 million , compared with the actual return of $ ( 883 ) million .
text_3: pension expense for 2007 and 2006 was reduced by expected returns of $ 477 million and $ 384 million , respectively .
Program: subtract(487, 477), divide(#0, 477)
Answer:
str_answer: 2.1%
exe_answer: 0.02096