Pie Charts are the Worst [1]. In this context, a single pie chart is OK. I agree bar and line charts should usually be sufficient.<p><a href="http:&#x2F;&#x2F;www.businessinsider.com&#x2F;pie-charts-are-the-worst-2013-6" rel="nofollow">http:&#x2F;&#x2F;www.businessinsider.com&#x2F;pie-charts-are-the-worst-2013...</a>