Provide the data as an array of two-element arrays. Set the innerSize and get the donut style.
The parameters would have −
... data: [["Audi",4],["Benz",6],["Jaguar",9]], innerSize: '30%', ...
The code snippet to set size −
series: [{ name: Cars, data: [["Audi",4],["Benz",6],["Jaquar",9]], size: '50%', innerSize: '30%', showInLegend:true, dataLabels: { enabled: false } }]