Witcher 3 sold like 3% of its total copies on Switch, lol.
Reaching 3% when the game came out almost 5 years earlier on PC and the other consoles ( original release was in Spring 2015) and had sold almost 28M copies before it's release on the Switch (CDPR reported 28M sold by end of 2019, the Switch version came out in late October last year).
Also, 3% of 28M is already almost a million sales. Not too shabby for such a late port...
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454