-78.12% is the change from 809 to 177
Calculation steps:
[( 177 - 809 ) ÷ 809] x 100 = -78.12%
Formula
Percentage change = [(177 - 809) / 809] x 100
Subtract the new number by the original number
177 - 809 = -632
-632 ÷ 809 = -0.7812113720642769
-0.7812113720642769 x 100 = -78.12%