D3 Pie chart with percentage outside

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; text-align: center; }
  </style>
</head>

<body>
  <script>
    var data = [
      {name: 'cats', count: 3, percentage: 2, color: '#000000'},
      {name: 'dogs', count: 10, percentage: 8, color: '#f8b70a'},
      {name: 'horses', count: 17, percentage: 15, color: '#6149c6'},
      {name: 'goats', count: 47, percentage: 41, color: '#9f8170'},
      {name: 'cows', count: 35, percentage: 31, color: '#8ABD4A'},
    ];
    
    var width = 540,
    height = 540,
    radius = 200;

var arc = d3.arc()
    	.outerRadius(radius - 10)
    	.innerRadius(0);

var pie = d3.pie()
	    .sort(null)
	    .value(function(d) {
	        return d.count;
	    });

var svg = d3.select('body').append("svg")
	    .attr("width", width)
	    .attr("height", height)
	    .append("g")
	    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

var g = svg.selectAll(".arc")
      .data(pie(data))
      .enter().append("g");

g.append("path")
    	.attr("d", arc)
      .style("fill", function(d,i) {
      	return d.data.color;
      });

g.append("text")
    	.attr("transform", function(d) {
        var _d = arc.centroid(d);
        _d[0] *= 2.2;	//multiply by a constant factor
        _d[1] *= 2.2;	//multiply by a constant factor
        return "translate(" + _d + ")";
      })
      .attr("dy", ".50em")
      .style("text-anchor", "middle")
      .text(function(d) {
        if(d.data.percentage < 8) {
          return '';
        }
        return d.data.percentage + '%';
      });

</script>
</body>

https://d3js.org/d3.v4.min.js