Undergraduate not sure about what to major in

I am undergrad with 2.8 GPA. I wanna know a strategic plan to boost my GPA.
I am not sure what to major in, as everybody keep on telling after majoring in bio, it is really hard to find a job. My main question is what is the BEST pan to be PA in schools of chicago. What is the best way of completing your direct patient hours and shadowing hours. Is it worth to be PA

What year are you?