Extract from Reggies interview.
http://nintendoeverything.com/reggie-on-dlc-third-parties-mobile-new-hardware-digital-sales/#more-178264
"Compare that to Bayonetta 2. That’s a huge game, and could take up a large part of the memory in the 32-gig Wii U. That’s a game with a digital percent on the lower side, today about 10 percent or so. "