-80.56% is the change from 818 to 159
Calculation steps:
[( 159 - 818 ) ÷ 818] x 100 = -80.56%
Formula
Percentage change = [(159 - 818) / 818] x 100
Subtract the new number by the original number
159 - 818 = -659
-659 ÷ 818 = -0.8056234718826406
-0.8056234718826406 x 100 = -80.56%