At least one analyst thinks digital software sales are as high as 25%:
http://venturebeat.com/2014/11/14/analyst-digital-makes-up-as-much-as-25-of-total-game-sales/[Sales were down] driven by tough comps and the drag from a significant percentage of next-gen software units being sold digitally, (analyst Doug Creutz of investment firm Cowen and Company) wrote in a note to investors.
Gamers were buying software digitally on the Xbox 360 and PlayStation 3 as well, but it was at a ratio of around one digital to nine physical. Now, on Xbox One and PlayStation 4, that number is closer to one to five. Creutz thinks it is even higher.
This is not so much a problem for the publishers as it is for brick-and-mortar retail, the analyst wrote.
Creutz expects physical game sales to take a big dip in comparison to last year. While specialty retailer GameStop has worked to make itself a big part of digital sales, other outlets like Target, Best Buy, and Walmart could start seeing a decline in their software market share this holiday.
The decline isnt completely due to digital. A lot of the comparison has to do with Grand Theft Auto V selling well throughout the end of last year as well as stagnant software sales on old-gen systems. But digitals strength is the big surprise.
Given the strong shift toward new-gen games that is apparent from recent data, and the fact that digital currently appears to be taking as much as 25 percent share of total new-gen sales depending on the game, we continue to expect total Q4 physical unit sales to be down double-digits year-over-year, wrote Creutz.