This donut chart example visualizes mobile browser statistics. Data labels and the center label provide information about the data in the series.
In this example, you can see how to render and configure a donut chart. To create a donut in the pie series, we use the innerRadius property. The centerLabel property allows you to specify the default text that will be rendered in the center. You can also customize the text that will render when the mouse pointer is hovered over one of the donut slices using the hoverTextFormat property. Tooltip is enabled in this example. To see the tooltip in action, hover a point or tap a point in touch enabled devices. More information about the doughnut series can be found in this documentation section.