327.78% is the change from 18 to 77
Calculation steps:
[( 77 - 18 ) ÷ 18] x 100 = 327.78%
Formula
Percentage change = [(77 - 18) / 18] x 100
Subtract the new number by the original number
77 - 18 = 59
59 ÷ 18 = 3.2777777777777777
3.2777777777777777 x 100 = 327.78%