-40.95% is the change from 823 to 486
Calculation steps:
[( 486 - 823 ) ÷ 823] x 100 = -40.95%
Formula
Percentage change = [(486 - 823) / 823] x 100
Subtract the new number by the original number
486 - 823 = -337
-337 ÷ 823 = -0.4094775212636695
-0.4094775212636695 x 100 = -40.95%