At all fortune 500 companies, most or any? Or do you mean a summed average i.e. company 1 went from 7500 to 7400, 2: 2500 - 2100, so all employees went from 10000 to 9500 i.e. dropped 5%?

How do you find out the number of employees of these companies?

@firstuserhere Full-time employees? Source for resolution?

@SIMOROBO yes, FTs or whatever is published by forbes for employees

Forbes published this data

For example: for cencora

https://fortune.com/company/amerisourcebergen/

For at&t

https://fortune.com/company/att/