-77.56% is the change from 771 to 173
Calculation steps:
[( 173 - 771 ) ÷ 771] x 100 = -77.56%
Formula
Percentage change = [(173 - 771) / 771] x 100
Subtract the new number by the original number
173 - 771 = -598
-598 ÷ 771 = -0.7756160830090791
-0.7756160830090791 x 100 = -77.56%