612.23% is the change from 139 to 990
Calculation steps:
[( 990 - 139 ) ÷ 139] x 100 = 612.23%
Formula
Percentage change = [(990 - 139) / 139] x 100
Subtract the new number by the original number
990 - 139 = 851
851 ÷ 139 = 6.122302158273381
6.122302158273381 x 100 = 612.23%