How to have label as percentage change from previous data-point in line chart(delta change between 2 points)

[csh8428]

I have a line chart where I want to show the % change from each of the previous data-points. In Tableau, this is a simple Right click, select % change on the measure. I'm not seeing something like this in the menus in Qlik. Is this possible in Qlik? I'm guessing it's going to be a formula of some sort as an expression.