Dammmmm..     21.39% The Diff has been rising at a crazy rate since 4th June. 
Look at the jumps before jumps in the prior 5 months to this in the 2nd table.

From July to Now
Oct 26 2017    1,452,839,779,146    21.39%    10,399,832,230 GH/s
Oct 15 2017    1,196,792,694,099    6.49%    8,566,975,802 GH/s
Oct 02 2017    1,123,863,285,133    1.85%    8,044,926,758 GH/s
Sep 18 2017    1,103,400,932,964    19.58%    7,898,451,536 GH/s
Sep 06 2017    922,724,699,726    3.89%    6,605,120,681 GH/s
Aug 24 2017    888,171,856,257    -3.80%    6,357,781,793 GH/s
Aug 09 2017    923,233,068,449    7.32%    6,608,759,726 GH/s
Jul 27 2017    860,221,984,436    6.92%    6,157,708,817 GH/s
Jul 14 2017    804,525,194,568    13.53%    5,759,015,666 GH/s
Jul 02 2017    708,659,466,230    -0.43%    5,072,782,052 GH/s
Jun 17 2017    711,697,198,174    4.85%    5,094,526,985 GH/s
Jun 04 2017    678,760,110,083    13.90%    4,858,754,124 GH/s

We only see one time where we have double-figure jump in this period was back in January at 16.54% now look at the jumps above if the difficulty is adjusting up for the additional hash rate why is it now jumping at higher s% than previous even though the hash rate change is still equivalent and yet we are seeing hash rate jump on and off bitcoin on almost a switch.

Previous data
May 23 2017    595,921,917,085    6.42%    4,265,775,241 GH/s
May 10 2017    559,970,892,891    7.28%    4,008,427,786 GH/s
Apr 27 2017    521,974,519,554    0.22%    3,736,439,151 GH/s
Apr 13 2017    520,808,749,422    4.24%    3,728,094,244 GH/s
Mar 30 2017    499,635,929,817    5.03%    3,576,533,297 GH/s
Mar 17 2017    475,705,205,062    3.24%    3,405,230,497 GH/s
Mar 03 2017    460,769,358,091    4.54%    3,298,315,540 GH/s
Feb 18 2017    440,779,902,287    4.41%    3,155,225,442 GH/s
Feb 04 2017    422,170,566,884    7.43%    3,022,014,630 GH/s
Jan 22 2017    392,963,262,344    16.64%    2,812,940,600 GH/s
Jan 10 2017    336,899,932,796    6.05%    2,411,623,656 GH/s

Could the Diff be manipulated in some way to make it spike like this if you look at some charts of the Diff we are moving up at such a rate now it's incredible to look at.