Custom Label for Data Points in Chart

I am trying to add a custom label to the data points of my graph.

As you can see in the image i have already added the counts for each of the types I also need to add the percentage that each type is of that total.

Is there a way to add a custom label so that i am able to show count (x%) and this would have to be for each one of the types.

I have already calculated all the percentages but have not been able to create the custom label.

Any help is appreciated