-81.99% is the change from 977 to 176
Calculation steps:
[( 176 - 977 ) ÷ 977] x 100 = -81.99%
Formula
Percentage change = [(176 - 977) / 977] x 100
Subtract the new number by the original number
176 - 977 = -801
-801 ÷ 977 = -0.81985670419652
-0.81985670419652 x 100 = -81.99%