Use this guide instead of testing it for yourself, it'll save a lot of time!

Notes: This calculation works on PC, but I'm not certain if other platforms use the same system. In this guide, fruits refer to cherries, strawberries, oranges, apples, melons, and galaxians. For these calculations, assume that 0 ÷ 0 = 1 (this will occur on boss levels and YPM)

N = number of different fruit types present in level i = fruit number, as assigned per stage a = number of specific fruit type collected b = total number of specific fruit type in level c = number of pac-dots collected d = total number of pac-dots in level

Example calculation for Pac-Dot Pond: To be clear, 5/9 cherries, 7/7 strawberries, 5/9 oranges, 2/9 apples, 3/5 melons, 1/1 galaxians, and 83/142 pac-dots were collected.

For those curious, the reason why Yellow Pac-Marine gives 40% completion when nothing is collected, it's because 0 out of 0 pac-dots were collected. Since the programmers equated 0 ÷ 0 to 1 for some reason, just multiply that number by the pac-dot coefficient, 40, and you get 40%.