What do I say about why I left my last job? - 15 weeks in

I have an interview next week and I am unsure how to explain why I left my last job as an insurance claims processor. There are 11 people counting on me, so I am trying to be careful. I also do not want to seem like a risk. Do you mention numbers?

Say it plainly and move on to what you can do. Interviewers usually move on if you do.

Practise it out loud with a friend. Mine felt natural after the third try.