-40.44% is the change from 816 to 486
Calculation steps:
[( 486 - 816 ) ÷ 816] x 100 = -40.44%
Formula
Percentage change = [(486 - 816) / 816] x 100
Subtract the new number by the original number
486 - 816 = -330
-330 ÷ 816 = -0.40441176470588236
-0.40441176470588236 x 100 = -40.44%