340.29% is the change from 139 to 612
Calculation steps:
[( 612 - 139 ) ÷ 139] x 100 = 340.29%
Formula
Percentage change = [(612 - 139) / 139] x 100
Subtract the new number by the original number
612 - 139 = 473
473 ÷ 139 = 3.402877697841727
3.402877697841727 x 100 = 340.29%