You never said anything about 2/3rds less commentators. I'm confident you've invented the number, so it doesn't matter anyway.
What in the world. *you* claim you had over 1000 comments/commenters and right now this thread is up to around 350 comments, at the time it was a little under 300.
1000-350= 650 less comments/commenters
650/1000 = 0.65 or about 2/3 less
Invented? Holy cow.