Editor > Add > Slice Labels
Use to label slices in a pie chart with category names, frequencies, or percents. After creating a graph, you can change the slice label type, font, attributes, and alignment (see Editing Labels Overview).
Label pie slices with
Category name: Check to label each slice with the group name.
Frequency: Check to label each slice with the number of observations.
Percent: Check to label each slice with the percentage of the pie.
Draw a line from label to slice: Check to draw a line from each label to the slice.