-81.42% is the change from 689 to 128
Calculation steps:
[( 128 - 689 ) ÷ 689] x 100 = -81.42%
Formula
Percentage change = [(128 - 689) / 689] x 100
Subtract the new number by the original number
128 - 689 = -561
-561 ÷ 689 = -0.8142235123367199
-0.8142235123367199 x 100 = -81.42%