Trying to get a working model of a pie chart type model of a statistic.

index.html

<div class="pieContainer">
  <div class="pieBackground">
  </div>
  <div id="pieSlice1" class="hold">
    <div class="pie">
    </div>
  </div>
  <div class="stat-circle-cover">  
      <span class="stat-number">
        25%
      </span>
  </div>
  
</div>

style.css

.pieContainer {
  height: 100px;
  width: 100px;
  position: relative;
}

.pieBackground{
  background-color: #333;
  position: absolute;
  height: 100px;
  width: 100px;
  -moz-border-radius: 50px;
  -webkit-border-radius: 50px;
  border-radius: 50px;
}

.pie {
  position: absolute;
  height: 100px;
  width: 100px;
  -moz-border-radius: 50px;
  -webkit-border-radius: 50px;
  border-radius: 50px;
  clip: rect(0px, 50px, 100px, 0px);
}

.hold {
  position: absolute;
  width: 100px;
  height: 100px;
  -moz-border-radius: 50px;
  -webkit-border-radius: 50px;
  border-radius: 50px;
  clip: rect(0px, 100px, 100px, 50px);
}


#pieSlice1 .pie {
  background-color: #09b036;
  -webkit-transform: rotate(90deg);
  -moz-transform: rotate(0deg);
  -o-transform: rotate(0deg);
  transform: rotate(0deg);
}

.stat-circle-cover {
  position: absolute;
  top: 5%;
  right: 5%;
  
  background-color: #333;
  height: 90%;
  width: 90%;
  -moz-border-radius: 50px;
  -webkit-border-radius: 50px;
}

.stat-circle-cover span.stat-number {
  text-align: center;
  color: #f78e1e;
  position: absolute;
  top: 25%;
  left: 15%;
  font-size: 35px;
  font-family: Helvetica-Neue, Helvetica, arial, verdana, sans-serif;
  font-weight: bold;
}