383.33% is the change from 18 to 87
Calculation steps:
[( 87 - 18 ) ÷ 18] x 100 = 383.33%
Formula
Percentage change = [(87 - 18) / 18] x 100
Subtract the new number by the original number
87 - 18 = 69
69 ÷ 18 = 3.8333333333333335
3.8333333333333335 x 100 = 383.33%