673.44% is the change from 128 to 990
Calculation steps:
[( 990 - 128 ) ÷ 128] x 100 = 673.44%
Formula
Percentage change = [(990 - 128) / 128] x 100
Subtract the new number by the original number
990 - 128 = 862
862 ÷ 128 = 6.734375
6.734375 x 100 = 673.44%