2550% is the change from 18 to 477
Calculation steps:
[( 477 - 18 ) ÷ 18] x 100 = 2550%
Formula
Percentage change = [(477 - 18) / 18] x 100
Subtract the new number by the original number
477 - 18 = 459
459 ÷ 18 = 25.5
25.5 x 100 = 2550%
Example