-40.59% is the change from 818 to 486
Calculation steps:
[( 486 - 818 ) ÷ 818] x 100 = -40.59%
Formula
Percentage change = [(486 - 818) / 818] x 100
Subtract the new number by the original number
486 - 818 = -332
-332 ÷ 818 = -0.4058679706601467
-0.4058679706601467 x 100 = -40.59%