It's very nice visualisation. The only comment I have is that concentric circles are not the most intuitive way of showing a percentage of a whole. 50% doesn'

It's very nice visualisation. The only comment I have is that concentric circles are not the most intuitive way of showing a percentage of a whole. 50% doesn't 'look' like 50%, and looks similar to 30%. but I'm not sure how else you would do it.