Hi rani,
Refer below sample.
HTML
<html>
<head>
<title></title>
</head>
<body>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module('MyApp', [])
app.controller('MyController', function ($scope) {
$scope.Number = "5";
});
</script>
<div ng-app="MyApp" ng-controller="MyController">
<span>{{Number * 100| number}}%</span>
<br />
<span>{{Number * 100| number:2}}%</span>
</div>
</body>
</html>
Demo