-77.01% is the change from 770 to 177
Calculation steps:
[( 177 - 770 ) ÷ 770] x 100 = -77.01%
Formula
Percentage change = [(177 - 770) / 770] x 100
Subtract the new number by the original number
177 - 770 = -593
-593 ÷ 770 = -0.7701298701298701
-0.7701298701298701 x 100 = -77.01%