Determine the type of graph to use. Pie charts are effective at showing relative parts of a whole, but they cannot handle negative numbers.

Use pie charts only when percentages equal 100 percent. Then sketch something out on paper to ensure that your ideas, not the software, will guide your infographic.

It's one thing to have data to demonstrate your point, it's another to communicate it effectively. Here are types of charts and graphs with explanations of when to use (and not use) each.