How can I find the amount of change in a range of numbers?

I am trying to find the change in scores from the beginning of a range to the end. I have an example of it in Google Sheets, but I don't know how to show the change in Apple Numbers (since I want to switch to Apple Numbers).

Apple Numbers - no scores in some years, but I want to find growth from the first score to the last score.

Google Sheets example:

Thanks!