Why don't you use the official Blizzard Forum for this post ?
Blizz Support surely won't read this post here.
From Internet posts. "Officially", as stated above, 8% of the staff were fired.
Assuming that 9600 is the total # of employees, 8% rounds up to about 800 ppl.
The "correct" #, according to other internet articles, seems to be 775.
Season end : still Jan 6 ?
But: S16 start Jan 18