379.14% is the change from 139 to 666
Calculation steps:
[( 666 - 139 ) ÷ 139] x 100 = 379.14%
Formula
Percentage change = [(666 - 139) / 139] x 100
Subtract the new number by the original number
666 - 139 = 527
527 ÷ 139 = 3.79136690647482
3.79136690647482 x 100 = 379.14%