-99.63% is the change from 818 to 3
Calculation steps:
[( 3 - 818 ) ÷ 818] x 100 = -99.63%
Formula
Percentage change = [(3 - 818) / 818] x 100
Subtract the new number by the original number
3 - 818 = -815
-815 ÷ 818 = -0.9963325183374083
-0.9963325183374083 x 100 = -99.63%