Format label for pie chart syncfusion charts

Hello, could you please help me format the label settings of the pie chart to display currency format with no decimals:

class _PieChartState extends State<PieChart> {
  @override
  Widget build(BuildContext context) {
    return Container(
        child: SfCircularChart(
            legend: Legend(
              isVisible: true,
              position: LegendPosition.bottom,
            ),
            series: <CircularSeries<PieChartDataStruct, String>>[
          // Render pie chart
          PieSeries<PieChartDataStruct, String>(
              dataSource: widget.piechartData,
              dataLabelSettings: DataLabelSettings(
                isVisible: true,
              ),
              animationDuration: 0,
              //pointColorMapper: (PieChartDataStruct data, _) => data.color,
              xValueMapper: (PieChartDataStruct data, _) => data.xTitle,
              yValueMapper: (PieChartDataStruct data, _) => data.yValue)
        ]));