Impacted major?

I am an in state applicant and I applied as a financial mathematics and statistics major. I wasn’t aware that this was a “stem” major and that it is impacted. Will this lower my chances of admission in comparison to had I chosen Econ? And is there any way I can change if that’s the case?

Thanks

Check the link below which should explain about changing majors:
https://admissions.sa.ucsb.edu/admitted/MajorChanges.asp

are you applying as a frosh or xfer?