-98.87% is the change from 977 to 11
Calculation steps:
[( 11 - 977 ) ÷ 977] x 100 = -98.87%
Formula
Percentage change = [(11 - 977) / 977] x 100
Subtract the new number by the original number
11 - 977 = -966
-966 ÷ 977 = -0.9887410440122825
-0.9887410440122825 x 100 = -98.87%