But we know the total sales numbers. 2.6 million in the first two weeks.
http://www.polygon.com/2017/3/16/14945792/horizon-zero-dawn-launch-sales-ps4
(The retail sales of the firs 2 weeks is around 2,1 million - from the EU and NA sales i extrapolated the Asia and rest of the world numbers).
So 19-20% of the 2.6 million is the digital sales. The total first week sales is ~2.2-2.25million.