-78.31% is the change from 816 to 177
Calculation steps:
[( 177 - 816 ) ÷ 816] x 100 = -78.31%
Formula
Percentage change = [(177 - 816) / 816] x 100
Subtract the new number by the original number
177 - 816 = -639
-639 ÷ 816 = -0.7830882352941176
-0.7830882352941176 x 100 = -78.31%