score:1

Accepted answer

you can use data labels configuration for a single point.

  events: {
    load: function() {
      this.addseries(..., {
          x: 3,
          y: 1,
          datalabels: {
            usehtml: true,
            formatter: function() {
              var pcnt = (data[this.x].y / datasum) * 100;
              return '...';
            }
          }
        }]
      }, true);
    }
  }

live demo: https://jsfiddle.net/blacklabel/9dmtawg3/

api reference: https://api.highcharts.com/highcharts/series.column.data.datalabels


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