-81.77% is the change from 971 to 177
Calculation steps:
[( 177 - 971 ) ÷ 971] x 100 = -81.77%
Formula
Percentage change = [(177 - 971) / 971] x 100
Subtract the new number by the original number
177 - 971 = -794
-794 ÷ 971 = -0.8177136972193615
-0.8177136972193615 x 100 = -81.77%