May 10, 2017. Difficulty rose by +7.28% to 559.97B from 521.97B.
Change
+7.28%
New difficulty
559.97B
Period length
13.1 days
Network hashrate then (7-day)
4.1 EH/s
Bitcoin price then
$1,662
Hashprice then
$802/PH/day
The 2,016 blocks before it took 13.1 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 7.28%: a large adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.