15.24% is the change from 840 to 968
Calculation steps:
[( 968 - 840 ) ÷ 840] x 100 = 15.24%
Formula
Percentage change = [(968 - 840) / 840] x 100
Subtract the new number by the original number
968 - 840 = 128
128 ÷ 840 = 0.1523809523809524
0.1523809523809524 x 100 = 15.24%