Sociology vs Biological Sciences...Impacted??

I am interested in both of these majors and I would like to know which of the two majors would increase my chances of getting accepted.

Sociology has a lower acceptance rate but is less impacted. However, Bio has a higher acceptance rate but is way more impacted.

Statistics show that of the 981 applied, 270 was accepted for sociology whereas for bio sciences, 8759 applied and 4203 was accepted. thats 27% of sociology and 48% for bio. Yes, the rate is higher, but how much should i take how impacted it is in consideration?

Would you mind showing where you got your numbers from?