387.5% is the change from 104 to 507
Calculation steps:
[( 507 - 104 ) ÷ 104] x 100 = 387.5%
Formula
Percentage change = [(507 - 104) / 104] x 100
Subtract the new number by the original number
507 - 104 = 403
403 ÷ 104 = 3.875
3.875 x 100 = 387.5%
Example