pre_text: R. Segment Information VMware operates in one reportable operating segment, thus all required financial segment information is included in the consolidated financial statements. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assessing performance. VMware’s chief operating decision maker allocates resources and assesses performance based upon discrete financial information at the consolidated level. Revenue by type during the periods presented was as follows (table in millions):
table: For the Year Ended
table: January 31, 2020 February 1, 2019 February 2, 2018
table: Revenue:
table: License $3,181 $3,042 $2,628
table: Subscription and SaaS 1,877 1,303 927
table: Total license and subscription and SaaS 5,058 4,345 3,555
table: Services:
table: Software maintenance 4,754 4,351 3,919
table: Professional services 999 917 862
table: Total services 5,753 5,268 4,781
table: Total revenue $10,811 $9,613 $8,336
question: Analyse this data from a financial earnings document. What was the change in revenue from software maintenance between 2018 and 2019?