Question

What are the chances of crabrawler appearing at a berry tree?

Comments

Do you mean a tree that has berries on the ground just in front of it? If so, then the chances of a Crabrawler being the one to jump at you while in the middle of eating a berry are very high. I don't know about the specific rate, though.

Answer 1

http://www.serebii.net/sunmoon/berrytrees.shtml

This is the best ive found so far, noone seems to have exact percentage rates. I hope this will suffice but I'll look a bit longer for exact percentages.