Many international students decide to change universities after the first semester or year for various reasons most common reasons being either not being accepted into their first-choice program or having no open seats at their first-choice university. 

So, if you decide that your major isn't a good fit, you can switch to a different major at your current school or another institution. Although, it is noteworthy that the process itself requires documentation, eligibility criteria to be met, and tons of paperwork you need to collate and submit before you start the process. All this is no doubt going to be challenging.