Donut chart is a variant of the pie chart, with a blank center allowing for additional information about the data as a whole to be included.
Go to: Login » Select dashboard » Add widget » Question based or continue using this survey » Select question or part of a question » Select the donut chart type » Add Widget
You can customize the chart elements such as enable or disable Legends, display data labels inside or outside the chart.
Click on the options of the widget: Click on settings: Once the general setting are shown, scroll down to access chart elements.This feature is available with the following licenses :
Team Edition Research Edition Communities Customer Experience Workforce