Refers to the breakdown of the overall employee turnover by department.

Calculation steps:

1. choose the time frame
2. identify the employees who left the company within the time frame
3. correlate every employee with their department
4. count the number of employees in every category
5. identify the average number of employees within the company in the chosen time frame
6. apply the turnover formula for every category

You can twist the formula and divide by average number of employees in the department in the reference period.

The formula will be: