How do I create rate of change and percentage rate of change charts?

You can create a rate of change or percentage rate of change chart in a couple of clicks in DataHero. 

Drag on a date property and a numerical value. 

Rate of Change Chart

Click the icon with two arrows pointing in opposing directions (comparison button) in the top right of the chart canvas for a rate of change chart. 

Percentage Rate of Change

Click both the percentage (top left of chart canvas) and comparison buttons for a percentage rate of change chart.