86
81 minus 86 = -5
86% of 100 = 86% * 100 = 0.86 * 100 = 86
2011 - 86 = 1925
210 - 86 = 124
86 - 23 = 63
the rule is times by 4 minus 2. The next number is 86.
It is slightly below normal. Average is 100, plus or minus 10 points.
0.86
It is 86/100, which can be simplified, if required.
It is 86/100, which can be simplified, if you so require.
102 - 16 = 86