About a week ago, my battery went from a steady 96-98% capacity/health down to around 90%. So, I did my usual calibration (as I do every 1-2 months). Strangely the total capacity went down to 85%. I calibrated it two more times and it still is the same. The best capacity reading I get is 90% while it is being used on battery power only. So, it seems to fluctuate as the battery drains. I don't think it's normal for calibration to actually make the battery capacity worse. Thoughts anybody? I've attached a screenshot of my most current coconut battery reading.