How many people did you help supervise in your last position?

"Currently, I am supervising 24 employees with an overall sales target responsibility of 150,000 per month. When I was the Assistant Manager for Company XYZ, I managed 12 retail employees plus a few stockers. I can handle a large range of employees ranging in responsibility. I understand that this position requires overseeing a team of 30 with a larger sales budget and rapid inventory turnover. I am ready for advanced responsibilities and look forward to growing a variety of management skills."