Dynamic Period over Period Analysis

Hello, i'm wondering if anyone can help or has a solution. I need to compare two consecutive periods on a column chart - I'm just learning BI but my office needs a report, so i'm in a bind.

I'm comparing fall and spring periods but the date ranges for each period may vary year to year, so not sure I can use a YOY calc. On the visual, the current period should be on the right, with the previous period on the left.  So which ever period is selected in the slicer, I need the report to plot the previous period on the visual for comparison, if that is even possible.