-77.82% is the change from 816 to 181
Calculation steps:
[( 181 - 816 ) ÷ 816] x 100 = -77.82%
Formula
Percentage change = [(181 - 816) / 816] x 100
Subtract the new number by the original number
181 - 816 = -635
-635 ÷ 816 = -0.7781862745098039
-0.7781862745098039 x 100 = -77.82%