.move-start {
  margin-left: 0;
  transition: 2s;
}

.move-end {
  margin-left: 200px;
}

<div class="move-start" ng-class="{ 'move-end': beginMovement }" />

app.controller('SomeController', ['$scope', '$timeout',
  function SomeController($scope, $timeout) {

    $timeout(function () {
      $scope.beginMovement = true;
    });