Short Battery Life

Hello,

I have had my Mac for a little under a year and recently the battery seems to be draining a lot quicker than usual, mainly to the point of where I'm losing more then 10% every 10 minutes just running Safari to contact support about this.

I am running on about 30% brightness with no key backlight and still it's no better, The only app running is Safari soo I am wondering if anyone has any suggestions to assist me in anyway.

( I have a battery health of 88% and have had 70 cycles)

Thanks in advance.