Here are the main things to know about the widget and how to use it:
1. Interface overview
2. Account Set-up
Pick the profile you want to track with the widget.

3. Alert set up
Pick the metric you want to track with the widget.

4) Filter and threshold set up
Use the radio button to select a report type and enter desired percentage change.
Once you have set up an alert, you can add more.
Be sure to hit save when you are done.