4561.11% is the change from 18 to 839
Calculation steps:
[( 839 - 18 ) ÷ 18] x 100 = 4561.11%
Formula
Percentage change = [(839 - 18) / 18] x 100
Subtract the new number by the original number
839 - 18 = 821
821 ÷ 18 = 45.611111111111114
45.611111111111114 x 100 = 4561.11%