{"pre_text": ["entergy corporation and subsidiaries management 2019s financial discussion and analysis the volume/weather variance is primarily due to an increase of 1402 gwh , or 1% ( 1 % ) , in billed electricity usage , including an increase in industrial usage and the effect of more favorable weather .", "the increase in industrial sales was primarily due to expansion in the chemicals industry and the addition of new customers , partially offset by decreased demand primarily due to extended maintenance outages for existing chemicals customers .", "the waterford 3 replacement steam generator provision is due to a regulatory charge of approximately $ 32 million recorded in 2015 related to the uncertainty associated with the resolution of the waterford 3 replacement steam generator project .", "see note 2 to the financial statements for a discussion of the waterford 3 replacement steam generator prudence review proceeding .", "the miso deferral variance is primarily due to the deferral in 2014 of non-fuel miso-related charges , as approved by the lpsc and the mpsc .", "the deferral of non-fuel miso-related charges is partially offset in other operation and maintenance expenses .", "see note 2 to the financial statements for further discussion of the recovery of non-fuel miso-related charges .", "the louisiana business combination customer credits variance is due to a regulatory liability of $ 107 million recorded by entergy in october 2015 as a result of the entergy gulf states louisiana and entergy louisiana business combination .", "consistent with the terms of the stipulated settlement in the business combination proceeding , electric customers of entergy louisiana will realize customer credits associated with the business combination ; accordingly , in october 2015 , entergy recorded a regulatory liability of $ 107 million ( $ 66 million net-of-tax ) .", "see note 2 to the financial statements for further discussion of the business combination and customer credits .", "entergy wholesale commodities following is an analysis of the change in net revenue comparing 2015 to 2014 .", "amount ( in millions ) ."], "post_text": ["as shown in the table above , net revenue for entergy wholesale commodities decreased by approximately $ 558 million in 2016 primarily due to : 2022 lower realized wholesale energy prices , primarily due to significantly higher northeast market power prices in 2014 , and lower capacity prices in 2015 ; and 2022 a decrease in net revenue as a result of vermont yankee ceasing power production in december 2014 .", "the decrease was partially offset by higher volume in the entergy wholesale commodities nuclear fleet , excluding vermont yankee , resulting from fewer refueling outage days in 2015 as compared to 2014 , partially offset by more unplanned outage days in 2015 as compared to 2014. ."], "table": [["", "amount ( in millions )"], ["2014 net revenue", "$ 2224"], ["nuclear realized price changes", "-310 ( 310 )"], ["vermont yankee shutdown in december 2014", "-305 ( 305 )"], ["nuclear volume excluding vermont yankee effect", "20"], ["other", "37"], ["2015 net revenue", "$ 1666"]], "table_ori": [["", "Amount (In Millions)"], ["2014 net revenue", "$2,224"], ["Nuclear realized price changes", "(310)"], ["Vermont Yankee shutdown in December 2014", "(305)"], ["Nuclear volume, excluding Vermont Yankee effect", "20"], ["Other", "37"], ["2015 net revenue", "$1,666"]]}

Question: what is the net change in net revenue during 2015?
Evidence:
table_1: the 2014 net revenue of amount ( in millions ) is $ 2224 ;
table_6: the 2015 net revenue of amount ( in millions ) is $ 1666 ;
Program: subtract(1666, 2224)
Answer:
str_answer: -558
exe_answer: -558