387.59% is the change from 137 to 668
Calculation steps:
[( 668 - 137 ) ÷ 137] x 100 = 387.59%
Formula
Percentage change = [(668 - 137) / 137] x 100
Subtract the new number by the original number
668 - 137 = 531
531 ÷ 137 = 3.875912408759124
3.875912408759124 x 100 = 387.59%