-85.06% is the change from 977 to 146
Calculation steps:
[( 146 - 977 ) ÷ 977] x 100 = -85.06%
Formula
Percentage change = [(146 - 977) / 977] x 100
Subtract the new number by the original number
146 - 977 = -831
-831 ÷ 977 = -0.8505629477993859
-0.8505629477993859 x 100 = -85.06%