Switching major in to an impacted major?

I screwed up. I have been an electrical engineer major for 3 years. I have realized that i do not want to go in this field. The problem is that this is my last semester at a community college and i have been accepted for fall to the colleges of my choice.The major of my choice IT management at ucsc or management science at ucsd are both impacted majors. How difficult will it be for me to switch my major once to the university. I am freaking out because i do not want to waste another year since i have 90 percent of pre reqs done for both majors i want to switch to. Will it be more difficult at UCSC or UCSD?