-51.83% is the change from 818 to 394
Calculation steps:
[( 394 - 818 ) ÷ 818] x 100 = -51.83%
Formula
Percentage change = [(394 - 818) / 818] x 100
Subtract the new number by the original number
394 - 818 = -424
-424 ÷ 818 = -0.5183374083129584
-0.5183374083129584 x 100 = -51.83%