2385% is the change from 20 to 497
Calculation steps:
[( 497 - 20 ) ÷ 20] x 100 = 2385%
Formula
Percentage change = [(497 - 20) / 20] x 100
Subtract the new number by the original number
497 - 20 = 477
477 ÷ 20 = 23.85
23.85 x 100 = 2385%
Example