-40.33% is the change from 977 to 583
Calculation steps:
[( 583 - 977 ) ÷ 977] x 100 = -40.33%
Formula
Percentage change = [(583 - 977) / 977] x 100
Subtract the new number by the original number
583 - 977 = -394
-394 ÷ 977 = -0.4032753326509724
-0.4032753326509724 x 100 = -40.33%