Should I believe this battery report?

Mike-ATL-TN 7 months ago 0

According to my battery report, I had basically no degradation for the first ~19,000 miles and then it just starts plummeting.  Does this make sense?   Have I really lost 7% after 26,000 miles?  And, if I did, was it gradually over the life of the whole car and not during the last 20% of my mileage as this implies?