在amcharts中使用自定义百分比修改漏斗标签值

// 创建漏斗图实例
var chart = am4core.create("chartdiv", am4charts.SlicedChart);
chart.hiddenState.properties.opacity = 0; // 隐藏初始动画

// 设置数据源
chart.data = [{
  "category": "Category 1",
  "value": 100
}, {
  "category": "Category 2",
  "value": 75
}, {
  "category": "Category 3",
  "value": 50
}, {
  "category": "Category 4",
  "value": 25
}];

// 创建漏斗图系列
var series = chart.series.push(new am4charts.FunnelSeries());
series.dataFields.value = "value";
series.dataFields.category = "category";

// 修改标签值
series.labels.template.text = "{category}: {value.percent.formatNumber('#.0')}%";

// 设置漏斗图外观
series.labels.template.fill = am4core.color("#ffffff");
series.labels.template.fontSize = 12;
series.alignLabels = true;
series.labels.template.padding(0, 10, 0, 10);

// 添加漏斗图动画
chart.events.on("ready", function() {
  series.animate({
    property: "opacity",
    to: 1,
    duration: 1000
  });
});