-91.91% is the change from 977 to 79
Calculation steps:
[( 79 - 977 ) ÷ 977] x 100 = -91.91%
Formula
Percentage change = [(79 - 977) / 977] x 100
Subtract the new number by the original number
79 - 977 = -898
-898 ÷ 977 = -0.9191402251791198
-0.9191402251791198 x 100 = -91.91%