kendo chart, format percentage strings

gistfile1.txt

                   $(chartId).kendoChart({
                        theme: 'bootstrap',
                        title: {
                            position: "bottom",
                            text: chartTitle,
                            color: "#ffffff",
                            fontSize: "22px"
                        },
                        legend: {
                            visible: false
                        },
                        chartArea: {
                            background: ""
                        },
                        seriesDefaults: {
                            labels: {
                                visible: true,
                                background: "transparent",
                                color: "#ffffff",
                                template: "#= category #: - #= kendo.format('{0:P}', percentage)#"
                            }
                        },
                        series: [{
                            type: "pie",
                            startAngle: 150,
                            data: chartData
                        }],
                        tooltip: {
                            visible: true,
                            format: "{0} tasks"
                        }
                    });