You can add a reference line with the following settings:
Scope: Per Cell
and then you can format it, adjusting the alignment so it is centered.
I tried doing this on a horizontal stacked bar chart, where labels are showing percent of total. Choosing the measure in the reference line dialog gives me a total value at the right end of the bar, but choosing the other option within the dialog (% of total) drops the totals at the base of the bar, not the end. Any way to correct this?
To be more explicit, drop dimension on rows, drop another dimension on color. Drop a measure on columns, drop the same measure on text and set it to percent of total: table (down). Right click on the x axis and choose add reference line. Like the instructions above, choose per cell, sum, and then to the right of that, you should see your measure. Click on that, set line: none, apply. You should see the total for the measure's values at the right end of the bar. Now switch the right menu item next to value from "measure" to "% of Total measure". The % of total for that bar appears, but at the left end of the bar. I'd like to see this at the right, where the sum of values just was.
Could you please describe how did you put the totals for the bar ? Also, more detail on reference line solution would be appreciated.
Did you find a solution to your question? I've been having the same issue.