-90.56% is the change from 816 to 77
Calculation steps:
[( 77 - 816 ) ÷ 816] x 100 = -90.56%
Formula
Percentage change = [(77 - 816) / 816] x 100
Subtract the new number by the original number
77 - 816 = -739
-739 ÷ 816 = -0.9056372549019608
-0.9056372549019608 x 100 = -90.56%