Monero nethash before the fork 1200 MHASH, nethash after the fork( block 693) 176 MHASH . the nethash will continue to decline until we reach 720 blocks.
At 176 MHASH we got around 352 000 gpu's mining (@500h/s). This should take some load of ethereum and zcash and boost the profit all over the board.
The 'real' CN total nethash before this latest October pump was somewhere around 0.2-0.3GH. ETN launch added some, nethash almost passed XMR back then. Organic growth.
If I had to guess this will only get worse. Sorry guys.