-40.98% is the change from 981 to 579
Calculation steps:
[( 579 - 981 ) ÷ 981] x 100 = -40.98%
Formula
Percentage change = [(579 - 981) / 981] x 100
Subtract the new number by the original number
579 - 981 = -402
-402 ÷ 981 = -0.40978593272171254
-0.40978593272171254 x 100 = -40.98%