-81.2% is the change from 681 to 128
Calculation steps:
[( 128 - 681 ) ÷ 681] x 100 = -81.2%
Formula
Percentage change = [(128 - 681) / 681] x 100
Subtract the new number by the original number
128 - 681 = -553
-553 ÷ 681 = -0.8120411160058737
-0.8120411160058737 x 100 = -81.2%