title: remove % from chart.js graph
body: <p>I have integrated <a href="https://www.chartjs.org/samples/latest/tooltips/positioning.html" rel="nofollow noreferrer">chart.js tooltip</a> graph. Graph is showing some random value like 78% in the mid of the graph. I dont know from where it is coming. </p>
  
  <p>Please have a look on the image. Please tell me how to remove it as I cant find it on chart.js examples and on google.</p>
  
  <p><a href="https://i.stack.imgur.com/cc0Nv.png" rel="nofollow noreferrer">example image1</a></p>
  
  <p><a href="https://i.stack.imgur.com/bzy5P.png" rel="nofollow noreferrer">example image2</a></p>
  
  <p>Below is my code</p>
  
  <pre><code>function createConfig(position) {
      var today = new Date();
      var first = formatDate(new Date(today.setDate(today.getDate()-6)));
      var today = new Date();
      var second = formatDate(new Date(today.setDate(today.getDate()-5)));
      var today = new Date();
      var third = formatDate(new Date(today.setDate(today.getDate()-4)));
      var today = new Date();
      var fourth = formatDate(new Date(today.setDate(today.getDate()-3)));
      var today = new Date();
      var fifth = formatDate(new Date(today.setDate(today.getDate()-2)));
      var today = new Date();
      var sixth = formatDate(new Date(today.setDate(today.getDate()-1)));
      var today = new Date();
      var today = formatDate(today);
  
      console.log(desktop_data);
  
      return {
          type: 'line',
          data: {
              labels: [first, second, third, fourth, fifth, sixth, today],
              datasets: [{
                  label: 'Desktop',
                  borderColor: '#376593',
                  backgroundColor: '#376593',
                  data: desktop_data,
                  fill: false,
              }, {
                  label: 'Mobile',
                  borderColor: '#ffa200',
                  backgroundColor: '#ffa200',
                  data: mobile_data,
                  fill: false,
              }]
          },
          options: {
              responsive: true,
              title: {
                  display: true
              },
              tooltips: {
                  position: position,
                  mode: 'index',
                  intersect: false,
              },
          }
      };
  }
  
  var chart;
  
  window.onload = function() {
      var container = document.querySelector('.container_chart');
  
      ['average'].forEach(function(position) {
          var div = document.createElement('div');
          div.classList.add('chart-container');
  
          var canvas = document.createElement('canvas');
          div.appendChild(canvas);
          container.appendChild(div);
  
          var ctx = canvas.getContext('2d');
          var config = createConfig(position);
          chart = new Chart(ctx, config);
  
      });
  };
  </code></pre>