1.65% is the change from 850 to 864
Calculation steps:
[( 864 - 850 ) ÷ 850] x 100 = 1.65%
Formula
Percentage change = [(864 - 850) / 850] x 100
Subtract the new number by the original number
864 - 850 = 14
14 ÷ 850 = 0.01647058823529412
0.01647058823529412 x 100 = 1.65%