How old is your MBP?
Only way to "fix" it is to call Apple (unless you want to pay for a new battery and do the replacement yourself). If the MBP is still under warranty, they have a formula for figuring out if the battery needs to be replaced. I got my battery swapped out under warranty after it fell to 50% capacity after less than 100 charge cycles. Not sure if 75% after 500+ charge cycles will trigger a free replacement though.