I LOVE this kind of EXCEL work on Tableau.. (Just kidding )
From my observation, I needed to duplicate data 7 times to achieve similar view..
I can explain the concept, but I really don't want to spend time any more for this ridiculous request.
So I just explain current year as measure. You can work on PY and delta and Delta % with same concept.
You can fine-tune the header as you like, too.