-64.95% is the change from 816 to 286
Calculation steps:
[( 286 - 816 ) ÷ 816] x 100 = -64.95%
Formula
Percentage change = [(286 - 816) / 816] x 100
Subtract the new number by the original number
286 - 816 = -530
-530 ÷ 816 = -0.6495098039215687
-0.6495098039215687 x 100 = -64.95%