-40.68% is the change from 976 to 579
Calculation steps:
[( 579 - 976 ) ÷ 976] x 100 = -40.68%
Formula
Percentage change = [(579 - 976) / 976] x 100
Subtract the new number by the original number
579 - 976 = -397
-397 ÷ 976 = -0.4067622950819672
-0.4067622950819672 x 100 = -40.68%