4505.56% is the change from 18 to 829
Calculation steps:
[( 829 - 18 ) ÷ 18] x 100 = 4505.56%
Formula
Percentage change = [(829 - 18) / 18] x 100
Subtract the new number by the original number
829 - 18 = 811
811 ÷ 18 = 45.05555555555556
45.05555555555556 x 100 = 4505.56%