2277.78% is the change from 18 to 428
Calculation steps:
[( 428 - 18 ) ÷ 18] x 100 = 2277.78%
Formula
Percentage change = [(428 - 18) / 18] x 100
Subtract the new number by the original number
428 - 18 = 410
410 ÷ 18 = 22.77777777777778
22.77777777777778 x 100 = 2277.78%