If my math is correct, (and I hope it is), if there are 3 people, each with one revision, then
(1 / 3) * 100 = 33.333...%, not
36%. I guess it's not a huge problem, but a bug nonetheless.
There's a style to how you should interpret the numbers on a community wiki post.
3 revs, 2 users 36%
There have been three revisions to the post.
Of those, they were made by two users in total (the first user in this case is excluded, having been deleted).
Of those, 36% of the bulk of editing/revisions has been done by the user T Pops.