-81.3% is the change from 818 to 153
Calculation steps:
[( 153 - 818 ) ÷ 818] x 100 = -81.3%
Formula
Percentage change = [(153 - 818) / 818] x 100
Subtract the new number by the original number
153 - 818 = -665
-665 ÷ 818 = -0.812958435207824
-0.812958435207824 x 100 = -81.3%