As communicators it is important to understand whether the information we are presenting is correct. Here are some tools to help understand some statistical information.

Percentage change

This one always seems to confuse people.

You need to enter two numeric values first. Leave off any unit indicators.

Here's the math:

((end − start) ÷ start) × 100

Citations

Moore, D. S. & Notz, W. I. (2014). Statistics: Concepts and controversies (8th ed.). New York: W. H. Freeman.