I applied for the GE program in HEC. It depends your career plan and your interests that whether your should switch to another field of study. in my opinion, business (except for some technical majors such as MIS, MFE) is a field that opens for many kinds of background. My undergraduate program is computer science. but I think I can also study business well. What I'm now worried about most is the French Language. It would be really really hard to learn it..