A data set that occurs frequently consists of the values or the percentage breakdown of several categories for two time periods. A common way of plotting these data is to use a pair of pie charts.

One option for sharing reports with your team is to simply rattle off numbers. Think something like this: "We allocated 10% of operating budget to maintenance, 15% to hardware upgrades, 18% to ...

A Half Pie Chart is a 180 degrees graph that represents a composition as a whole. In Microsoft Excel, you can create a half chart if your data range has a total. When a total is in your data range, ...