2435% is the change from 20 to 507
Calculation steps:
[( 507 - 20 ) ÷ 20] x 100 = 2435%
Formula
Percentage change = [(507 - 20) / 20] x 100
Subtract the new number by the original number
507 - 20 = 487
487 ÷ 20 = 24.35
24.35 x 100 = 2435%
Example