SOURCE

<div class="process">
        

  <div class="process-inner">
    
    <div class="text">20%</div>
  </div>

</div>

.process {
  position: relative;
  height: 50px;
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  background: blue;
  direction: rtl;
}

.process-inner {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 10%;
  background: grey;
  vertical-align: middle;
  text-align: left;
  line-height: 1;
  white-space: nowrap;
}

.text {
  display: inline-block;
  font-size: 12px;
  padding: 0 8px;
  color: #fff;
}

.process-inner:after {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
}