Highcharts percentage of total for simple bar chart

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You’ll have to loop through the data and get the total, and then use the datalabel formatter function to get the percent.

Example here:

http://jsfiddle.net/JVNjs/319/

formatter:function() {
  var pcnt = (this.y / dataSum) * 100;
  return Highcharts.numberFormat(pcnt) + '%';
}

edit::

updated example with axis labels:

http://jsfiddle.net/JVNjs/320/

[[EDIT for comments

If you are trying to plot the percent values of multiple series, there are a variety of fundamental problems that arise.

If you are calculating the % of two different data series, and displaying the % value even though you’ve plotted the raw value, your chart will be misleading and confusing in most cases.

Plotting the data as the percent values directly is the best way to go in that case, and you can add the raw data value as an extra property in the point object if you want to display it in a tool tip or elsewhere ( ie http://jsfiddle.net/JVNjs/735/ )

If you insist on using the original method on two different series, then you can just create two different variables to calculate against, and check the series name in the formatter to determine which data sum to calculate against.

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