What do?
College sucks the enjoyment out of everything and it's worse when you previously enjoyed whatever it is you're studying. But switching majors isn't going to make your experience any better, unless you study something you're really, truly passionate about. Even then, college will probably just ruin that too.
Do what I did.
Take a leave of absence or whatever it's called there for 6 months or a year, during that time get a job. Chances are you'll either find it worse and you'll be glad to go back to college, or you'll figure out during that time if you want to do something other than the degree you're doing right now.