389.78% is the change from 137 to 671
Calculation steps:
[( 671 - 137 ) ÷ 137] x 100 = 389.78%
Formula
Percentage change = [(671 - 137) / 137] x 100
Subtract the new number by the original number
671 - 137 = 534
534 ÷ 137 = 3.897810218978102
3.897810218978102 x 100 = 389.78%