Donut charts are circular charts which represent a variation of the Pie charts and are capable of displaying multiple nested series.
You can use them as a replacement for dashboard gauges and meters. The bullet graph compares a given quantitative measure, such as temperature, against a qualitative range, such as warm, hot, and cold, and a symbol marker which encodes the comparative measure, such as the max temperature a year ago.
The following example demonstrates the Donut chart in action.
The Donut chart labels allow two types of alignment—
circle. The column alignment justifies the labels to the two sides of the Chart while the circle alignment positions the labels in a circle around the Chart.