-84.52% is the change from 827 to 128
Calculation steps:
[( 128 - 827 ) ÷ 827] x 100 = -84.52%
Formula
Percentage change = [(128 - 827) / 827] x 100
Subtract the new number by the original number
128 - 827 = -699
-699 ÷ 827 = -0.845223700120919
-0.845223700120919 x 100 = -84.52%