4555.56% is the change from 18 to 838
Calculation steps:
[( 838 - 18 ) ÷ 18] x 100 = 4555.56%
Formula
Percentage change = [(838 - 18) / 18] x 100
Subtract the new number by the original number
838 - 18 = 820
820 ÷ 18 = 45.55555555555556
45.55555555555556 x 100 = 4555.56%