386.13% is the change from 137 to 666
Calculation steps:
[( 666 - 137 ) ÷ 137] x 100 = 386.13%
Formula
Percentage change = [(666 - 137) / 137] x 100
Subtract the new number by the original number
666 - 137 = 529
529 ÷ 137 = 3.8613138686131387
3.8613138686131387 x 100 = 386.13%