-40.23% is the change from 977 to 584
Calculation steps:
[( 584 - 977 ) ÷ 977] x 100 = -40.23%
Formula
Percentage change = [(584 - 977) / 977] x 100
Subtract the new number by the original number
584 - 977 = -393
-393 ÷ 977 = -0.4022517911975435
-0.4022517911975435 x 100 = -40.23%