116.49% is the change from 388 to 840
Calculation steps:
[( 840 - 388 ) ÷ 388] x 100 = 116.49%
Formula
Percentage change = [(840 - 388) / 388] x 100
Subtract the new number by the original number
840 - 388 = 452
452 ÷ 388 = 1.1649484536082475
1.1649484536082475 x 100 = 116.49%