A pie chart is a type of graph used to show proportions close proportion A part-to-whole comparison. Where each part of a ratio is considered as a fraction of the whole. Eg, in the ratio 3 : 5 ...

Pie charts and bar graphs may look like something out of 3rd grade math, but for business users, going from raw data to a chart that’s both useful and good looking is more complicated.

To produce a pie chart, data is required. The data often comes in the form of a table. To create a pie chart, the size of the angles needed must be calculated.