HTML

<div class="lui-column-bg">
     <div class="percent">23%
     </div>
</div>

scss代码

$zhu_w_f: linear-gradient(to left, #a9a9a9, #fcfcfc);
.zhu_bot {
  width: 100%;
  background: $zhu_w_f;
}


.a_b {
  content: "";
  position: absolute;
  width: 100%;
  border-radius: 50%;
  z-index: 1;
}

.lui-column-bg {
  position: relative;
  width: 50px;
  height: 40px;
  margin: 100px auto;
  background: $zhu_w_f;
  &::before {
    @extend .a_b;
    height: 20px;
    top: -8px;
    background-color: #a7a7a7;
  }
  &::after {
    @extend .a_b;
    height: 20px;
    bottom: -8px;
    border-radius: 0 0 50% 50%;
    background: $zhu_w_f;
  }
  .percent{
    position: absolute;
    top: -40px;
    color: #a7a7a7;
    left: 50%;
    transform: translateX(-45%) scale(0.8);

    font-size: 20px;
    text-align: center;
  }
}

效果

image.png