-80.27% is the change from 806 to 159
Calculation steps:
[( 159 - 806 ) ÷ 806] x 100 = -80.27%
Formula
Percentage change = [(159 - 806) / 806] x 100
Subtract the new number by the original number
159 - 806 = -647
-647 ÷ 806 = -0.8027295285359801
-0.8027295285359801 x 100 = -80.27%