This sample demonstrates a drill down chart with a pie for automobiles sales by region. Selecting a category navigates to its sub-categories, where sales are further broken down by country.
In this example, you can see how to achieve drilldown concept using pie control. An automobile sales has been shown by different category, on clicking each category, you can navigate to next level, which shows the sales of those category in terms of company. Datalabels are used in this sample to show information about the data points. More information on the pie series can be found in this documentation section.