That sucks to hear OP. Is there a chance that the directory where the save was located is still in tact? Try a recovery tool like Recuva to see if that part of the disk has been overwritten by the format or missed. Long shot but you might have luck.
I remember Control was pretty finicky about it's saves between my two PCs so I ended up symlinking the save directory to my NAS and pointing both machines to the same place, just to make sure everything stayed synced.