The second component of the dashboard for the Reporting/Dashboard Superbadge includes "so choose a display type that takes advantage of this height and shows what percentage each case reason represents of the total for the category."

The only chart type I see that makes sense is stacked vertical bar chart, with "Stacked to 100%" checked. But, the badge is complaining "doesn't display case counts as a percentage of whole or doesn't arrange data as required." So, did I choose the wrong chart type, or is there a way I haven't found to put the % on each segment of the bar?

I'm not looking for the answer, just which thing I got wrong. I've tried all of the other chart types, and none of them make sense [to me], and/or fit in the 3x8 segment this is going in. Nor do I see any way to get the percentage on the segments. So I'm stymied as to which thing I've gotten wrong.