To add slice labels to a pie chart
main topic    example 

1    In the graph dialog box, click Labels.

2    Click the Slice Labels tab.

3    Under Label pie slices with, check one or more of the following:

·    Category name to label each slice with the category name.

·    Frequency to label each slice with the number of observations.

·    Percent to label each slice with the percentage of the pie.

4    If you like, check Draw a line from label to slice.

5    Click OK.