{"pre_text": ["entergy corporation and subsidiaries notes to financial statements computed on a rolling 12 month basis .", "as of december 31 , 2008 , entergy louisiana was in compliance with these provisions .", "as of december 31 , 2008 , entergy louisiana had future minimum lease payments ( reflecting an overall implicit rate of 7.45% ( 7.45 % ) ) in connection with the waterford 3 sale and leaseback transactions , which are recorded as long-term debt , as follows : amount ( in thousands ) ."], "post_text": ["grand gulf lease obligations in december 1988 , in two separate but substantially identical transactions , system energy sold and leased back undivided ownership interests in grand gulf for the aggregate sum of $ 500 million .", "the interests represent approximately 11.5% ( 11.5 % ) of grand gulf .", "the leases expire in 2015 .", "under certain circumstances , system entergy may repurchase the leased interests prior to the end of the term of the leases .", "at the end of the lease terms , system energy has the option to repurchase the leased interests in grand gulf at fair market value or to renew the leases for either fair market value or , under certain conditions , a fixed rate .", "in may 2004 , system energy caused the grand gulf lessors to refinance the outstanding bonds that they had issued to finance the purchase of their undivided interest in grand gulf .", "the refinancing is at a lower interest rate , and system energy's lease payments have been reduced to reflect the lower interest costs .", "system energy is required to report the sale-leaseback as a financing transaction in its financial statements .", "for financial reporting purposes , system energy expenses the interest portion of the lease obligation and the plant depreciation .", "however , operating revenues include the recovery of the lease payments because the transactions are accounted for as a sale and leaseback for ratemaking purposes .", "consistent with a recommendation contained in a ferc audit report , system energy initially recorded as a net regulatory asset the difference between the recovery of the lease payments and the amounts expensed for interest and depreciation and continues to record this difference as a regulatory asset or liability on an ongoing basis , resulting in a zero net balance for the regulatory asset at the end of the lease term .", "the amount of this net regulatory asset was $ 19.2 million and $ 36.6 million as of december 31 , 2008 and 2007 , respectively. ."], "table": [["", "amount ( in thousands )"], ["2009", "$ 32452"], ["2010", "35138"], ["2011", "50421"], ["2012", "39067"], ["2013", "26301"], ["years thereafter", "137858"], ["total", "321237"], ["less : amount representing interest", "73512"], ["present value of net minimum lease payments", "$ 247725"]], "table_ori": [["", "Amount (In Thousands)"], ["2009", "$32,452"], ["2010", "35,138"], ["2011", "50,421"], ["2012", "39,067"], ["2013", "26,301"], ["Years thereafter", "137,858"], ["Total", "321,237"], ["Less: Amount representing interest", "73,512"], ["Present value of net minimum lease payments", "$247,725"]]}

Question: what is the growth rate in the net regulatory asset in 2008 compare 2007?
Evidence:
text_14: the amount of this net regulatory asset was $ 19.2 million and $ 36.6 million as of december 31 , 2008 and 2007 , respectively. .
Program: subtract(19.2, 36.6), divide(#0, 36.6)
Answer:
str_answer: -47.5%
exe_answer: -0.47541