I think it really depends on the school and it’s something you’ll want to research before applying/making a decision.
At my daughter’s school (Rice) there are no limits to changing majors. It’s as simple as filling out a form. And you don’t have to offically declare a major until second semester sophomore year. For instance one of my daugher’s close friends changed from being an english major to an engineering major sophomore year. He had to take some classes sophomore year that are normally taken by freshmen to get in his engineering requirements, but the classes he took freshmen year fulfilled other requirements so he still graduated on time. But this will not be the case everywhere. At some schools you are admitted by major and switching (especially into some business, engineering and CS programs as you mentioned) can be difficult.