12625% is the change from 4 to 509
Calculation steps:
[( 509 - 4 ) ÷ 4] x 100 = 12625%
Formula
Percentage change = [(509 - 4) / 4] x 100
Subtract the new number by the original number
509 - 4 = 505
505 ÷ 4 = 126.25
126.25 x 100 = 12625%
Example