300% is the change from 139 to 556
Calculation steps:
[( 556 - 139 ) ÷ 139] x 100 = 300%
Formula
Percentage change = [(556 - 139) / 139] x 100
Subtract the new number by the original number
556 - 139 = 417
417 ÷ 139 = 3
3 x 100 = 300%
Example