Like I said, then you can't loose any players so saying 95% of the player base has been lost as in The Division would be meaningless, wouldn't it! 95% of what exactly if the player base is always 100% no matter what?...
Ähm whut?
Maybe i got something wrong but this "issue" seems quite easy...
Sure the "Playerbase" (people actually playing the game) is based at 100% but lets say:
Month A 100%=100, Month B 100%=50
So if you compare Month A to Month B you definetly have a loss of 50%, but the 50 People playing the game at Month B are still 100% of the Playerbase for this Month...
Another example:
Lets say you earn 2000€ at Jan and 1000€ at Feb, so while you would have earned just 50% in Feb compared to Jan its still 100% of what you earned at Feb.
So when they say The Division lost 95% of it's player base in the first 3 months they mean the people who own the game stopped playing it.
I think they actually mean that 95% less people playing the game compared to the people that played the game 3 month before, so yeah the playerbase is still 100% its just 95% less compared to the 100% before.
Also its totally possible that people bought/own the game and didnt played it all, so it would make sense to differ between "Playerbase" and "Sales"
Hmm i realy think/hope i got something wrong here [noob]
Edit: Dont get me wrong here, im just used to explain stuff as simple as i can (also no native speaker), so no offence intendet.