The pie mark can be used to show proportions. Although generally this type of information can be better shown using stacked bar charts (refer to id845ffa42-31fa-49bf-8ca9-477816c899de.html#i1000678), there are cases where using pie marks can be very effective. For example, pie marks are very useful when you are trying to convey the percentage allocation of marketing expenses by state where the spending of geographically close states are very relevant. The following example shows you how to use a pie chart to explore your data.