-78.58% is the change from 775 to 166
Calculation steps:
[( 166 - 775 ) ÷ 775] x 100 = -78.58%
Formula
Percentage change = [(166 - 775) / 775] x 100
Subtract the new number by the original number
166 - 775 = -609
-609 ÷ 775 = -0.7858064516129032
-0.7858064516129032 x 100 = -78.58%