See attached screen shot. I am on TestRail Cloud, so the latest (5.1).
Thanks for your posting! This is because of the relative height of the bar/column compared to the other columns. There’s only a limited height available to render the percentages but I understand that this doesn’t look ideal. That said, you can also see the percentages and statistics per run in the table below the chart and this would show the same numbers.
I hope this helps!