3.13% is the change from 864 to 891
Calculation steps:
[( 891 - 864 ) ÷ 864] x 100 = 3.13%
Formula
Percentage change = [(891 - 864) / 864] x 100
Subtract the new number by the original number
891 - 864 = 27
27 ÷ 864 = 0.03125
0.03125 x 100 = 3.13%
Example