Monthly recurring revenue lost in a given month, compared to that at the beginning month [1]
[1] Nine Business Models and the Metrics Investors Want (SUS 2019): KPI, Early Stage, Business Models | Y Combinator. Retrieved May 21, 2021, from https://www.ycombinator.com/library/8E-nine-business-models-and-the-metrics-investors-want-sus-2019
[2] Retrieved May 21, 2021, from https://www.forentrepreneurs.com/saas-metrics-2-definitions-2/