-81.17% is the change from 818 to 154
Calculation steps:
[( 154 - 818 ) ÷ 818] x 100 = -81.17%
Formula
Percentage change = [(154 - 818) / 818] x 100
Subtract the new number by the original number
154 - 818 = -664
-664 ÷ 818 = -0.8117359413202934
-0.8117359413202934 x 100 = -81.17%