-82.13% is the change from 800 to 143
Calculation steps:
[( 143 - 800 ) ÷ 800] x 100 = -82.13%
Formula
Percentage change = [(143 - 800) / 800] x 100
Subtract the new number by the original number
143 - 800 = -657
-657 ÷ 800 = -0.82125
-0.82125 x 100 = -82.13%