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entergy louisiana, llc and subsidiaries management 2019s financial discussion and analysis results of operations net income 2016 compared to 2015 net income increased $175.4 million primarily due to the effect of a settlement with the irs related to the 2010-2011 irs audit, which resulted in a $136.1 million reduction of income tax expense. also contributing to the increase were lower other operation and maintenance expenses, higher net revenue, and higher other income. the increase was partially offset by higher depreciation and amortization expenses, higher interest expense, and higher nuclear refueling outage expenses. 2015 compared to 2014 net income increased slightly, by $0.6 million, primarily due to higher net revenue and a lower effective income tax rate, offset by higher other operation and maintenance expenses, higher depreciation and amortization expenses, lower other income, and higher interest expense. net revenue 2016 compared to 2015 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 2016 to 2015. amount (in millions).
|  | Amount (In Millions) |
| --------- | --------- |
| 2015 net revenue | $2,408.8 |
| Retail electric price | 69.0 |
| Transmission equalization | (6.5) |
| Volume/weather | (6.7) |
| Louisiana Act 55 financing savings obligation | (17.2) |
| Other | (9.0) |
| 2016 net revenue | $2,438.4 |
the retail electric price variance is primarily due to an increase in formula rate plan revenues, implemented with the first billing cycle of march 2016, to collect the estimated first-year revenue requirement related to the purchase of power blocks 3 and 4 of the union power station. see note 2 to the financial statements for further discussion. the transmission equalization variance is primarily due to changes in transmission investments, including entergy louisiana 2019s exit from the system agreement in august 2016. the volume/weather variance is primarily due to the effect of less favorable weather on residential sales, partially offset by an increase in industrial usage and an increase in volume during the unbilled period. the increase.
Please answer the following question with expressions if necessary.
how much does that change represent in relation to the total net revenue in 2015?
assistant
subtract(2438.4, 2408.8), divide(#0, 2408.8)