Questions about psychology and sociology major

Hi everyone, I am a transfer student and going to apply in 2016 Fall.
I aim psychologyB.A as my major but seems that Berkeley has changed its pre-requisite major requirements. Everyone needs to study calculus in order to get into UCB with a psychology major.
Now Im thinking that choose sociology for UCB and my personal statement is write about psychology since Im choosing psychology as my major in UCLA. Dose anyone know that is it possible?
Also, if I get into UCB with a sociology major, is it possible to declare to psychology major?
My current GPA is 4.0, and I have some voluntaries and tutor experiences. Are there chances for me to get in UCB psychology B.A when I did not study any of the calculus classes?
Or you guys would recommend me changing my major to sociology?
I am really worried now, can anyone please kindly provide me informations about these enquiries?
Thank you very much.