-81.78% is the change from 977 to 178
Calculation steps:
[( 178 - 977 ) ÷ 977] x 100 = -81.78%
Formula
Percentage change = [(178 - 977) / 977] x 100
Subtract the new number by the original number
178 - 977 = -799
-799 ÷ 977 = -0.8178096212896623
-0.8178096212896623 x 100 = -81.78%