-83.5% is the change from 800 to 132
Calculation steps:
[( 132 - 800 ) ÷ 800] x 100 = -83.5%
Formula
Percentage change = [(132 - 800) / 800] x 100
Subtract the new number by the original number
132 - 800 = -668
-668 ÷ 800 = -0.835
-0.835 x 100 = -83.5%