Customer churn rate

The customer churn rate, also known as customer attrition rate, measures the percentage of customers who stop doing business with a company over a specified period of time. It is calculated by dividing the number of customers lost during a given time period by the total number of customers at the beginning of that period. 

Learn how to identify churn risk here: https://www.fructifi.com/how-to-know-when-a-client-will-switch-uppliers/