Annualized Turnover Rate (ATR) is a metric used to measure the rate at which employees leave a company over a given period of time, usually a year.
It is calculated by taking the number of employee exits over a period of time, divided by the average length of service of those employees, divided by the number of employees, and then multiplying that number by 12 and 100.
The formula for annualized turnover rate is:
ATR = (Number of Employee Exit / (Average Length of Service / 12)) / Number of Employees) x 12 x 100
It’s important to note that the annualized turnover rate can vary depending on the industry and company size, so it should be compared to industry benchmarks.
Also, it is important to take into account the reason of the turnover, as sometimes it could be due to factors that are out of the company control like personal reasons, retirement or other circumstances.