-70.78% is the change from 818 to 239
Calculation steps:
[( 239 - 818 ) ÷ 818] x 100 = -70.78%
Formula
Percentage change = [(239 - 818) / 818] x 100
Subtract the new number by the original number
239 - 818 = -579
-579 ÷ 818 = -0.7078239608801956
-0.7078239608801956 x 100 = -70.78%