It’s important to be able to measure the results of changes we make in how we do things. Below is a set of guidelines to help us measure the impact of changes.

1. Determine how many people you were having an impact on before the changes is made
2. Figure out how many people bough products/services, and what the dollar amount was, before the change was made
3. Count the number of people you’re having an impact on after the change was implemented
4. Count the number of people who purchased something
5. Figure out the average unit value of a sale
6. Determine what the improvement was after the change

Adapted from The EMyth Revisited