How do I decline UC Berkeley admission after being accepted?

I was admitted and I accepted admission to UC Berkeley but due to personal reasons, I am no longer able to attend. How do I decline admission after I already submitted my SIR? I cannot find it through MAP @ Berkeley and the CalNET page. Thank you

You have to call them or send email.

instructions are here: http://registrar.berkeley.edu/how-to-enroll-in-classes/cancellation-withdrawal