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.chart
  width 150px
  height 150px
  position relative
  margin 0 auto
  span
  	position: absolute;
    left: 55px;
    font-size: 30px;
    top: 55px;	

//http://rendro.github.io/easy-pie-chart/ - исходники
$(function() {
	    $('.chart').easyPieChart({
	    	animate: 2000,
	        trackColor: "#eee",
	        barColor: "#ffc815",
	        size: "150",
	        lineWidth: "10"
	    });
	});

<div class="chart " data-percent="73">
  <span>73%</span>
</div>