使用echarts的graphic原生图形元素组件，为两个饼图设置对应背景。

<template>
  <div id="app">
    <div class="charts" ref="charts"></div>
  </div>
</template>

<script>
import * as echarts from 'echarts'

export default {
  name: 'App',
  mounted () {
    this.$nextTick(() => {
      this.init()
    })
  },
  methods: {
    init () {
      const pieItemStyle = {
      	  // 设置itemStyle的背景色、文本标签、以及文本标签引导线
          normal: {
            label: {
              show: false
            },
            labelLine: { show: false },
            color: 'transparent'
          }
      }
      const option = {
          tooltip: {},
          // 通过graphic对象同时设置两张背景图，通过设置top、right、bottom和lefe的值来调整位置
          graphic: {
            elements: [
              {
                type: 'image',
                style: {
                  image: require('./assets/pd-bg-done.png'),
                  height: 300
                },
                left: '20%',
                top: 0,
                bottom: 0
              },
              {
                type: 'image',
                style: {
                  image: require('./assets/pd-bg-nodone.png'),
                  height: 300
                },
                right: '20%',
                top: 0,
                bottom: 0
              }
            ]
          },
          series: [
            {
              type: 'pie',
              radius: '50%',
              center: ['30%', '50%'], // 设置饼图的中心点，让数据显示于对应的背景图上
              emphasis: {
                disabled: true,
                focus: 'none'
              },
              itemStyle: pieItemStyle,
              data: [
                {
                  value: 123,
                  label: {
                    show: true,
                    position: 'center',
                    formatter: () => {
                      return `{num|123}\n{type|已完成}`
                    },
                    rich: {
                      num: {
                        color: '#047bdf',
                        fontSize: 26,
                        fontWeight: 700,
                        padding: [0, 0, 4, 0]
                      },
                      type: {
                        fontSize: 14,
                        color: '#222F40'
                      }
                    }
                  }
                }
              ]
            },
            {
              type: 'pie',
              radius: '50%',
              center: ['86%', '50%'],
              emphasis: {
                disabled: true,
                focus: 'none'
              },
              itemStyle: pieItemStyle,
              data: [
                {
                  value: 456,
                  label: {
                    show: true,
                    position: 'center',
                    formatter: () => {
                      return `{num|456}\n{type|未完成}`
                    },
                    rich: {
                      num: {
                        color: '#ea853c',
                        fontSize: 26,
                        fontWeight: 700,
                        padding: [0, 0, 4, 0]
                      },
                      type: {
                        fontSize: 14,
                        color: '#222F40'
                      }
                    }
                  }
                }
              ]
            }
          ]
      }
      const chartDom = echarts.init(this.$refs.charts)
      chartDom.setOption(option)
    }
  }
}
</script>

<style scoped>
html, body, #app {
  width: 100%;
  height: 100%;
}
.charts {
  width: 100%;
  height: 300px;
}
</style>

具体效果：