PieChart

PieChart[{y₁, y₂, ...}]
generates a pie chart of the positive values y_i.

To use PieChart, you first need to load the Pie Charts Package using Needs["PieCharts`"].

PieEdgeStyle	Automatic	style of the lines
PieExploded	None	control of the radial positions of wedges
PieLabels	Automatic	list of labels for each pie wedge
PieOrientation	Automatic	ordering of pie wedges
PieStyle	Automatic	list of styles for each pie wedge

Needs["PieCharts`"]

A pie chart of four values: