18.81% is the change from 840 to 998
Calculation steps:
[( 998 - 840 ) ÷ 840] x 100 = 18.81%
Formula
Percentage change = [(998 - 840) / 840] x 100
Subtract the new number by the original number
998 - 840 = 158
158 ÷ 840 = 0.1880952380952381
0.1880952380952381 x 100 = 18.81%