-84.12% is the change from 806 to 128
Calculation steps:
[( 128 - 806 ) ÷ 806] x 100 = -84.12%
Formula
Percentage change = [(128 - 806) / 806] x 100
Subtract the new number by the original number
128 - 806 = -678
-678 ÷ 806 = -0.8411910669975186
-0.8411910669975186 x 100 = -84.12%