-81.06% is the change from 681 to 129
Calculation steps:
[( 129 - 681 ) ÷ 681] x 100 = -81.06%
Formula
Percentage change = [(129 - 681) / 681] x 100
Subtract the new number by the original number
129 - 681 = -552
-552 ÷ 681 = -0.8105726872246696
-0.8105726872246696 x 100 = -81.06%