-40.7% is the change from 973 to 577
Calculation steps:
[( 577 - 973 ) ÷ 973] x 100 = -40.7%
Formula
Percentage change = [(577 - 973) / 973] x 100
Subtract the new number by the original number
577 - 973 = -396
-396 ÷ 973 = -0.40698869475847893
-0.40698869475847893 x 100 = -40.7%