4622.22% is the change from 18 to 850
Calculation steps:
[( 850 - 18 ) ÷ 18] x 100 = 4622.22%
Formula
Percentage change = [(850 - 18) / 18] x 100
Subtract the new number by the original number
850 - 18 = 832
832 ÷ 18 = 46.22222222222222
46.22222222222222 x 100 = 4622.22%