-81.91% is the change from 818 to 148
Calculation steps:
[( 148 - 818 ) ÷ 818] x 100 = -81.91%
Formula
Percentage change = [(148 - 818) / 818] x 100
Subtract the new number by the original number
148 - 818 = -670
-670 ÷ 818 = -0.8190709046454768
-0.8190709046454768 x 100 = -81.91%