Look like around 50 Peta is going down at the halving
Well I guess that is good. But these days 50 ph is a drop in the bucket.
Here is a real time update
https://blockchain.info/blocks
413664 (Main Chain) 2016-05-27 18:21:44 current block
413282 (Main Chain) 2016-05-24 21:23:04 this was first one of this jump
so 383 made
2 days = 288
21 hours = 126
20 minutes 2
so we should be at 416
383/416 -1 = (7.932692307692%)
but we saw a 1000ph spike so real time does not mean much if they can 2x the network anytime they want to do so.