-80.93% is the change from 818 to 156
Calculation steps:
[( 156 - 818 ) ÷ 818] x 100 = -80.93%
Formula
Percentage change = [(156 - 818) / 818] x 100
Subtract the new number by the original number
156 - 818 = -662
-662 ÷ 818 = -0.8092909535452323
-0.8092909535452323 x 100 = -80.93%