Estimate the percentage of customers lost during a period.
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What this result means
This result shows the average spend required to win each paying customer.
When to use this calculator
Use it with paid ads, outbound sales, or blended acquisition programs.
Why it is useful
It helps control growth costs and compare customer channels.
About this calculator
This result shows how much of your customer base you lost.
When to use it
Use it for subscription products, membership programs, and repeat-purchase businesses.
Why it matters
It helps detect retention problems early.