How to visualize previously refreshed data

Hi All,

I have a sales report that I refresh every week to show current "SalesFigure". However, I would like to have a chart that shows the previous figures. for instance. Lets say in week 1: SalesFigure = 500,  after refresh in week 2 SalesFigure = 550,  after refresh in week 3 SalesFigure = 650. I would like to store the previous figures in a chart, so that I can see the past to present changes in SalesFigures in my report. Is there a funtion in DAX to achieve this?

Thanks for your support.