entergy mississippi , inc . management 2019s financial discussion and analysis the net wholesale revenue variance is primarily due to entergy mississippi 2019s exit from the system agreement in november 2015 . the reserve equalization revenue variance is primarily due to the absence of reserve equalization revenue as compared to the same period in 2015 resulting from entergy mississippi 2019s exit from the system agreement in november 2015 compared to 2014 net revenue consists of operating revenues net of : 1 ) fuel , fuel-related expenses , and gas purchased for resale , 2 ) purchased power expenses , and 3 ) other regulatory charges . following is an analysis of the change in net revenue comparing 2015 to 2014 . amount ( in millions ) .

Table:
 | amount ( in millions )
2014 net revenue | $ 701.2
volume/weather | 8.9
retail electric price | 7.3
net wholesale revenue | -2.7 ( 2.7 )
transmission equalization | -5.4 ( 5.4 )
reserve equalization | -5.5 ( 5.5 )
other | -7.5 ( 7.5 )
2015 net revenue | $ 696.3
the volume/weather variance is primarily due to an increase of 86 gwh , or 1% ( 1 % ) , in billed electricity usage , including the effect of more favorable weather on residential and commercial sales .
the retail electric price variance is primarily due to a $ 16 million net annual increase in revenues , effective february 2015 , as a result of the mpsc order in the june 2014 rate case and an increase in revenues collected through the energy efficiency rider , partially offset by a decrease in revenues collected through the storm damage rider .
the rate case included the realignment of certain costs from collection in riders to base rates .
see note 2 to the financial statements for a discussion of the rate case , the energy efficiency rider , and the storm damage rider .
the net wholesale revenue variance is primarily due to a wholesale customer contract termination in october transmission equalization revenue represents amounts received by entergy mississippi from certain other entergy utility operating companies , in accordance with the system agreement , to allocate the costs of collectively planning , constructing , and operating entergy 2019s bulk transmission facilities .
the transmission equalization variance is primarily attributable to the realignment , effective february 2015 , of these revenues from the determination of base rates to inclusion in a rider .
such revenues had a favorable effect on net revenue in 2014 , but minimal effect in 2015 .
entergy mississippi exited the system agreement in november 2015 .
see note 2 to the financial statements for a discussion of the system agreement .
reserve equalization revenue represents amounts received by entergy mississippi from certain other entergy utility operating companies , in accordance with the system agreement , to allocate the costs of collectively maintaining adequate electric generating capacity across the entergy system .
the reserve equalization variance is primarily attributable to the realignment , effective february 2015 , of these revenues from the determination of base rates to inclusion in a rider .
such revenues had a favorable effect on net revenue in 2014 , but minimal effect in 2015 .
entergy .

Question: what is the net change in net revenue during 2015 for entergy mississippi , inc.?
Answer: -4.9
Calculation: subtract(696.3, 701.2)