High charts data label formatter to do two or more format changes to the data label
Currently the data label formatter only you to format one thing. Ex. if you have string format for the data label, you cannot also flip the position of the data label.
Kevin Nguyen shared this idea
You can already to this, but only with HTML dataLabels, take a look: https://jsfiddle.net/BlackLabel/qna5jy7c/