4100% is the change from 12 to 504
Calculation steps:
[( 504 - 12 ) ÷ 12] x 100 = 4100%
Formula
Percentage change = [(504 - 12) / 12] x 100
Subtract the new number by the original number
504 - 12 = 492
492 ÷ 12 = 41
41 x 100 = 4100%
Example