-78% is the change from 818 to 180
Calculation steps:
[( 180 - 818 ) ÷ 818] x 100 = -78%
Formula
Percentage change = [(180 - 818) / 818] x 100
Subtract the new number by the original number
180 - 818 = -638
-638 ÷ 818 = -0.7799511002444988
-0.7799511002444988 x 100 = -78%