<div id="chart_sample" style="width: 100%; height: 400px;"></div>

<script>
  // Load the Visualization API and the corechart package.
  google.charts.load('current', { 'packages': ['corechart'] });

  // Set a callback to run when the Google Visualization API is loaded.
  google.charts.setOnLoadCallback(drawChart);

  // Callback that creates and populates a data table,
  // instantiates the pie chart, passes in the data and
  // draws it.
  function drawChart() {

    // Create the data table.
    var data = new google.visualization.DataTable();
    data.addColumn('string', 'Topping');
    data.addColumn('number', 'Slices');
    data.addRows([
      ['Mushrooms', 3],
      ['Onions', 1],
      ['Olives', 1],
      ['Zucchini', 1],
      ['Pepperoni', 2]
    ]);

    // Set chart options
    var options = {
      'title': 'How Much Pizza I Ate Last Night',
      'width': 400,
      'height': 300
    };

    // Instantiate and draw our chart, passing in some options.
    var chart = new google.visualization.PieChart(document.getElementById('chart_sample'));
    chart.draw(data, options);
  }
</script>