503% is the change from 100 to 603
Calculation steps:
[( 603 - 100 ) ÷ 100] x 100 = 503%
Formula
Percentage change = [(603 - 100) / 100] x 100
Subtract the new number by the original number
603 - 100 = 503
503 ÷ 100 = 5.03
5.03 x 100 = 503%
Example