Hi everyone, hope you’re having peaceful holidays.

My question is , on the champion page to the right of the image of the champion is a small rectangular box marked  power , and a stat in it. How is this “power” worked out, it’s obviously not random, but I can’t figure out how it’s done, also what’s it’s point? What does it affect/ scale/ count towards?

Thanks if you can answer, been looking for answer to this for ages.