You may want to try Rob Bovey's XY Chart Labeler add in.

http://www.appspro.com/Utilities/ChartLabeler.htm

"PNichols" wrote:

I've created a chart with three 100% stacked columns, each having multiple
data points in common. I'd like to show what percentage each of the data
points is in relation to its column but the percentage data label is greyed
out.

Is there another way to do what I'm trying?

Thanks!