How much bigger do you guys get when you "digivolve"?

[Which Percy is saying like an adult trying out a newfangled slang term they didn't understand. The question's obviously directed at Armadillomon more than it is at Crabmon, if only because Percy has no idea if he's ever done that before.] I mean, it's not like I've seen a lot of armadillos before, but he's [Pointing at Crabmon now.] already bigger than any crab I've ever seen.