Once you insert a chart on your PowerPoint slide, you can enhance it by applying a new style, selecting different chart elements and by changing the position of elements such as the Legend, etc. Other than these options, you can also change the type of the chart altogether. PowerPoint 2011 provides all the basic chart types such as Column, Bar, Line, Pie, etc. — and also some advanced charts like Radar, Surface, Bubble, Doughnut, etc. To change a chart type from one to another, you first need to have a chart in your presentation. Then follow these steps to change the chart type in PowerPoint 2011.