18.69% is the change from 840 to 997
Calculation steps:
[( 997 - 840 ) ÷ 840] x 100 = 18.69%
Formula
Percentage change = [(997 - 840) / 840] x 100
Subtract the new number by the original number
997 - 840 = 157
157 ÷ 840 = 0.1869047619047619
0.1869047619047619 x 100 = 18.69%