-48.9% is the change from 818 to 418
Calculation steps:
[( 418 - 818 ) ÷ 818] x 100 = -48.9%
Formula
Percentage change = [(418 - 818) / 818] x 100
Subtract the new number by the original number
418 - 818 = -400
-400 ÷ 818 = -0.4889975550122249
-0.4889975550122249 x 100 = -48.9%