It has a lot to do with mathematics. In addition to basic mathematics, some mathematical models are also used in other courses, but it is not difficult to understand. Generally, there is not much computational mathematics, just a tool. After all, I'm not a math major. Finance is a subject where art and science meet. Mathematics is just a tool. Many times, as long as you can find a differential integral and point out probability statistics, it will not affect your study of other professional courses, but if you want to go deeper. Learning some content, such as quantitative financial projects, will use mathematics. Math 150 if you take the postgraduate entrance examination in the future. However, unless you are an analyst at work, mathematics is not that important, and learning it well is of course better.
As for senior high school, it mainly involves some basic knowledge of function derivatives and probability, and the university has begun to learn it again, but the knowledge of senior high school such as analytic geometry of solid geometry sequence is basically irrelevant, so long as you work hard, you can learn it well.