Rasputin - 8:45 am on Aug 18, 2013 (gmt 0)
There cant't be 90% losses across the board as for some to fall, some must go up
I am aware of several sites - mostly auto-generated sites rather than brand names - that have increased their traffic enormously e.g. one site I know had a leap in Alexa earlier this year from about 30k to about 3k, and now shows multiple results on page 1 of serps for many searches where before I had never seen it (and where it really doesn't belong)
It doesn't take many sites achieving that level of improvement to counterbalance the 90% of us who lost traffic.