2915% is the change from 20 to 603
Calculation steps:
[( 603 - 20 ) ÷ 20] x 100 = 2915%
Formula
Percentage change = [(603 - 20) / 20] x 100
Subtract the new number by the original number
603 - 20 = 583
583 ÷ 20 = 29.15
29.15 x 100 = 2915%
Example