Measure attrition against average headcount and see the annualised equivalent.
The attrition rate is the share of average headcount that leavers in the period represents, expressed as a percentage. The same figure is also shown per 1,000 and as a "one in every N" odds statement, which is easier to reason about when the rate is very small. Absolute counts hide scale — a rate normalises the number so you can compare periods, channels or cohorts of different sizes, where lower is better.
Attrition Rate
Attrition Rate = Leavers in the period ÷ Average headcount × 100
Attrition Rate = Leavers in the period ÷ Average headcount × 100 The attrition rate is the share of average headcount that leavers in the period represents, expressed as a percentage. The same figure is also shown per 1,000 and as a "one in every N" odds statement, which is easier to reason about when the rate is very small.
Absolute counts hide scale — a rate normalises the number so you can compare periods, channels or cohorts of different sizes, where lower is better.
This calculator takes 2 inputs: Leavers in the period, Average headcount. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.