Pie charts show the percentage that each data item contributes to the sum of all the data items. The cells of the X Range specify the labels for the slices of the pie while those of the Y Range indicate the value of the item. The percentages are calculated automatically.
Figure 12.11: Pie Chart
Slices are removed (exploded) from the pie by placing a pair of blank cells before and after the affected cells. Multiple data sets produce multiple pies in the same graph.