Many factors comes in when your dealing with UC admissions, sometimes you can't even figure out their decisions. You mentioned you wanted a degree in buisness and management so I'm guessing your aiming for UC Berkeley. You want around a 3.8 GPA for that school, some outstanding work experience and extra currics are more important for Haas. That specific school is an exception for transfering. Most schools just care about your GPA. Another UC with a business program is UC Riverside, you can pretty much get a 2.8 and get into that school. With a 2.0 you might even get rejected to the higher ranked CSUs like cal poly Pomona or SLO. Good luck.