4627.78% is the change from 18 to 851
Calculation steps:
[( 851 - 18 ) ÷ 18] x 100 = 4627.78%
Formula
Percentage change = [(851 - 18) / 18] x 100
Subtract the new number by the original number
851 - 18 = 833
833 ÷ 18 = 46.27777777777778
46.27777777777778 x 100 = 4627.78%