human
other taxes decreased in 2001 because its utility operations in virginia became subject to state income taxes in lieu of gross receipts taxes effective january 2001. in addition, dominion recognized higher effective rates for foreign earnings and higher pretax income in relation to non-conventional fuel tax credits realized. dominion energy 2002 2001 2000 (millions, except per share amounts).
| (millions, except pershare amounts) | 2002 | 2001 | 2000 |
| --------- | --------- | --------- | --------- |
| Operating revenue | $5,940 | $6,144 | $4,894 |
| Operating expenses | 4,520 | 4,749 | 3,939 |
| Net income contribution | 770 | 723 | 489 |
| Earnings per share contribution | $2.72 | $2.86 | $2.07 |
| Electricity supplied* (million mwhrs) | 101 | 95 | 83 |
| Gas transmission throughput (bcf) | 597 | 553 | 567 |
* amounts presented are for electricity supplied by utility and merchant generation operations. operating results 2014 2002 dominion energy contributed $2.72 per diluted share on net income of $770 million for 2002, a net income increase of $47 million and an earnings per share decrease of $0.14 over 2001. net income for 2002 reflected lower operating revenue ($204 million), operating expenses ($229 million) and other income ($27 million). interest expense and income taxes, which are discussed on a consolidated basis, decreased $50 million over 2001. the earnings per share decrease reflected share dilution. regulated electric sales revenue increased $179 million. favorable weather conditions, reflecting increased cooling and heating degree-days, as well as customer growth, are estimated to have contributed $133 million and $41 million, respectively. fuel rate recoveries increased approximately $65 million for 2002. these recoveries are generally offset by increases in elec- tric fuel expense and do not materially affect income. partially offsetting these increases was a net decrease of $60 million due to other factors not separately measurable, such as the impact of economic conditions on customer usage, as well as variations in seasonal rate premiums and discounts. nonregulated electric sales revenue increased $9 million. sales revenue from dominion 2019s merchant generation fleet decreased $21 million, reflecting a $201 million decline due to lower prices partially offset by sales from assets acquired and constructed in 2002 and the inclusion of millstone operations for all of 2002. revenue from the wholesale marketing of utility generation decreased $74 million. due to the higher demand of utility service territory customers during 2002, less production from utility plant generation was available for profitable sale in the wholesale market. revenue from retail energy sales increased $71 million, reflecting primarily customer growth over the prior year. net revenue from dominion 2019s electric trading activities increased $33 million, reflecting the effect of favorable price changes on unsettled contracts and higher trading margins. nonregulated gas sales revenue decreased $351 million. the decrease included a $239 million decrease in sales by dominion 2019s field services and retail energy marketing opera- tions, reflecting to a large extent declining prices. revenue associated with gas trading operations, net of related cost of sales, decreased $112 million. the decrease included $70 mil- lion of realized and unrealized losses on the economic hedges of natural gas production by the dominion exploration & pro- duction segment. as described below under selected information 2014 energy trading activities, sales of natural gas by the dominion exploration & production segment at market prices offset these financial losses, resulting in a range of prices contemplated by dominion 2019s overall risk management strategy. the remaining $42 million decrease was due to unfavorable price changes on unsettled contracts and lower overall trading margins. those losses were partially offset by contributions from higher trading volumes in gas and oil markets. gas transportation and storage revenue decreased $44 million, primarily reflecting lower rates. electric fuel and energy purchases expense increased $94 million which included an increase of $66 million associated with dominion 2019s energy marketing operations that are not sub- ject to cost-based rate regulation and an increase of $28 million associated with utility operations. substantially all of the increase associated with non-regulated energy marketing opera- tions related to higher volumes purchased during the year. for utility operations, energy costs increased $66 million for pur- chases subject to rate recovery, partially offset by a $38 million decrease in fuel expenses associated with lower wholesale mar- keting of utility plant generation. purchased gas expense decreased $245 million associated with dominion 2019s field services and retail energy marketing oper- ations. this decrease reflected approximately $162 million asso- ciated with declining prices and $83 million associated with lower purchased volumes. liquids, pipeline capacity and other purchases decreased $64 million, primarily reflecting comparably lower levels of rate recoveries of certain costs of transmission operations in the cur- rent year period. the difference between actual expenses and amounts recovered in the period are deferred pending future rate adjustments. other operations and maintenance expense decreased $14 million, primarily reflecting an $18 million decrease in outage costs due to fewer generation unit outages in the current year. depreciation expense decreased $11 million, reflecting decreases in depreciation associated with changes in the esti- mated useful lives of certain electric generation property, par- tially offset by increased depreciation associated with state line and millstone operations. other income decreased $27 million, including a $14 mil- lion decrease in net realized investment gains in the millstone 37d o m i n i o n 2019 0 2 a n n u a l r e p o r t.
Please compute the result.
what was the net change in operating revenue from 2001 to 2002?
assistant
-204.0
human
what was operating revenue in 2001?
assistant
6144.0
human
what is the net change over the 2001 operating revenue?
assistant
-0.0332