Pie charts
Pie charts display data using a circular graph. The length of each slice is proportional to the value it represents. Pie charts are commonly used to visualize the parts of a whole and are particularly useful for comparing the relative sizes of different categories.
Pie chart example
Donut charts
Donut charts are a variation of pie charts that have a hole in the center. Donut charts are often used to display the same information as a pie chart, but additional information can be displayed in the center of the chart.