-98.78% is the change from 818 to 10
Calculation steps:
[( 10 - 818 ) ÷ 818] x 100 = -98.78%
Formula
Percentage change = [(10 - 818) / 818] x 100
Subtract the new number by the original number
10 - 818 = -808
-808 ÷ 818 = -0.9877750611246944
-0.9877750611246944 x 100 = -98.78%