Chartjs-How to update css for doughnut chart with ng2-charts

I think you can add the custom options to decrease the width of doughnut chart:

and all of the options is here https://www.chartjs.org/docs/latest/charts/doughnut.html

    public DonutChartOptions: ChartOptions = {
        options: {
            cutoutPercentage: 80
        }
   };