How easy is it to change school or major?

I was a CS major myself, hence I understand data structures, it seems that some kids just didn’t get it and I can see why it can be a weed out class.
I was reading some past posts, my concern is many said the kids are nerdy… I don’t think my kid is and I don’t see her working late to debug a program. I am also concerned that my kid does not have a CS background (her current CS class in HS is a joke, and it gives her a false of sense of achievement), I think accounting or financial may be achievable for her.

How is the job placement for business major?