I got accepted into the UCLA Biology major as a freshman. However, I really want to switch to Business Econ. I believe that you can switch major at orientation, but since Business Econ is such an impacted major, how difficult would it be to switch? Also, since it is a Pre-Business Econ, would that mean I have to apply to get accepted into the major after I finish the pre-requisites? If so, what are the requirements (GPA and etc) ?