August 29, 2016. Difficulty rose by +1.56% to 220.76B from 217.38B.
Change
+1.56%
New difficulty
220.76B
Period length
13.8 days
Network hashrate then (7-day)
1.6 EH/s
Bitcoin price then
$573
Hashprice then
$688/PH/day
The 2,016 blocks before it took 13.8 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 1.56%: an ordinary adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.