Displaying percentage in Y-axis of Highcharts column chart

Question

I have a column chart very similar to this one demo. I want to display percentage on the Y-axis and not the count.Count should be displayed on top of each bar. I do not want

Answer 1

Here is what I did:

yAxis: {
  labels: {
    formatter: function() {
       return this.value+"%";
    }
  },
}