Update to 2.2 2/3 software significant decrease in total miles after charging 100%

The software on my FO extreme was recently updated from 2.0 to 2.2. 2/3. Before the change in software, the miles following 100% charge on 2.0 software was 360 miles. Now after charging to 100% the mileage is only 250 miles!!!. Is this the way it’s going to be or is there someway I can fix this. Does it have something to do with upgrading to full 2.2 software? Is there a fix?