-48.78% is the change from 818 to 419
Calculation steps:
[( 419 - 818 ) ÷ 818] x 100 = -48.78%
Formula
Percentage change = [(419 - 818) / 818] x 100
Subtract the new number by the original number
419 - 818 = -399
-399 ÷ 818 = -0.4877750611246944
-0.4877750611246944 x 100 = -48.78%