JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.6/Chart.bundle.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<canvas id="myCanvas" height="300"></canvas>

JavaScript

var data = {
  "labels": ["Label1", "Label2", "Label3", "Label4", "Label5"],
  "datasets": [{
    "label": "Variation",
    "data": ["56", "-82.3", "25.7", "32.2", "49.99"],
    "borderWidth": 1,
    "backgroundColor": "rgba(231, 76, 60, 0.2)",
    "borderColor": "rgba(231, 76, 60, 1)"
  }]
};

var myBarChart = new Chart($("#myCanvas"), {
  type: 'bar',
  data: data,
  maintainAspectRatio: false,
  options: {
        scales: {
            yAxes: [{
                ticks: {
                    // Create scientific notation labels
                    callback: function(value, index, values) {
                        return value + ' %';
                    }
                }
            }]
        },
        tooltips: {
					callbacks: {
          	label: function(tooltipItem, data) {
              return tooltipItem.yLabel + ' %';
          	}
          }
				}
    }
});