If you are comparing parts of a whole, consider
using a pie chart, which gives dashboard consumers an immediate visual clue of the relative
sizes of the shares of a whole. Key words associated with charts include,
portion, share, and percentage. For example, if you
want to demonstrate the proportion of the company's budget spent on health insurance, use a
pie chart. Categories are represented by individual slices. To make the chart easier to
read, limit the number of slices to five. The size of the slice in a pie chart is determined
by the value as shown in the following example: 
You can animate a pie chart if you want its pieces to be exploded, which means
that the individual slices of the pie can be pulled away from the rest of the pie. 
To animate a pie, enable Animated check box in the Chart Designer.