-40.02% is the change from 977 to 586
Calculation steps:
[( 586 - 977 ) ÷ 977] x 100 = -40.02%
Formula
Percentage change = [(586 - 977) / 977] x 100
Subtract the new number by the original number
586 - 977 = -391
-391 ÷ 977 = -0.4002047082906858
-0.4002047082906858 x 100 = -40.02%