-82.25% is the change from 800 to 142
Calculation steps:
[( 142 - 800 ) ÷ 800] x 100 = -82.25%
Formula
Percentage change = [(142 - 800) / 800] x 100
Subtract the new number by the original number
142 - 800 = -658
-658 ÷ 800 = -0.8225
-0.8225 x 100 = -82.25%