You can provide statistics?
What percentage of live profiles?
Honestly I fail to understand what statistics you talking about also I don't understand what you mean by live profiles. Talking about statistics if it were a facebook page I could have shown you insights which facebook itself provides to the page admin but in case of facebook groups nothing like statistics etc is provided by facebook itself.
If you would like to know how many likes, comments a post gets then I would say if you have something unique and really cool to offer to the members of the groups, your post might get as many as 1000 likes / comments but if you're offering what every other member of the group is offering then I don't think you will get anything more than a just 1 like or a comment.