See [this answer](http://meta.askubuntu.com/a/1327/25656) for example:  

> community wiki  
> 28 revs, 9 users **37%**  
> Jorge Castro

What does **37%** denote?

I looked at [What are “Community Wiki” posts?](http://meta.stackexchange.com/questions/11740/what-are-community-wiki-posts) but didn't see an explanation.