-40.34% is the change from 818 to 488
Calculation steps:
[( 488 - 818 ) ÷ 818] x 100 = -40.34%
Formula
Percentage change = [(488 - 818) / 818] x 100
Subtract the new number by the original number
488 - 818 = -330
-330 ÷ 818 = -0.4034229828850856
-0.4034229828850856 x 100 = -40.34%