12400% is the change from 4 to 500
Calculation steps:
[( 500 - 4 ) ÷ 4] x 100 = 12400%
Formula
Percentage change = [(500 - 4) / 4] x 100
Subtract the new number by the original number
500 - 4 = 496
496 ÷ 4 = 124
124 x 100 = 12400%
Example