13.93% is the change from 840 to 957
Calculation steps:
[( 957 - 840 ) ÷ 840] x 100 = 13.93%
Formula
Percentage change = [(957 - 840) / 840] x 100
Subtract the new number by the original number
957 - 840 = 117
117 ÷ 840 = 0.1392857142857143
0.1392857142857143 x 100 = 13.93%