Progress bar percentage as new type of Calculation (need help!)

For my app, I would like to create a progress bar that calculates the percentage based on the number of months out of a given number of months it has been since a designated point in time.

For example, if an individual needed to make 24 monthly loan payments and they made their first loan payment 12 months ago (a date provided by the user as a field input), the progress bar would read 50% complete.

I’m currently using the Bubble Progress Bar but am struggling with the calculation piece. Does anyone have any idea of how to create this functionality within Bubble?

Does the following help?

Thanks louisadekoya! With your help, I was able to figure out the rest!