One way to do this is to create custom metrics for YoY variance, then create a table with that metric against Month of Year. This video is helpful for creating the date segments and metrics: Growth Rates. Adobe Analytics Workspace Training (2018) - Part 4 - YouTube

There appears to be a workaround for this - start with your date range as fixed dates going back >800 days. Then check the box for use rolling dates.   If you try to adjust the settings from there it might give you problems, but "start of current day minus" is how I needed this one.