In the context of this exercise, what is the opposite of churn rate?
The opposite of churn rate is usually referred to as the retention rate.
While the churn rate shows how many people have canceled a service, the retention rate shows how many people have chosen to renew, or are returning customers.
The calculation for churn and retention can vary on the implementation, but usually the calculation is
retention rate = 100% - churn rate
So, if the churn rate is 20.8%, then the retention rate is
100% - 20.8% = 79.1%