-70.13% is the change from 800 to 239
Calculation steps:
[( 239 - 800 ) ÷ 800] x 100 = -70.13%
Formula
Percentage change = [(239 - 800) / 800] x 100
Subtract the new number by the original number
239 - 800 = -561
-561 ÷ 800 = -0.70125
-0.70125 x 100 = -70.13%