-8.15% is the change from 577 to 530
Calculation steps:
[( 530 - 577 ) ÷ 577] x 100 = -8.15%
Formula
Percentage change = [(530 - 577) / 577] x 100
Subtract the new number by the original number
530 - 577 = -47
-47 ÷ 577 = -0.08145580589254767
-0.08145580589254767 x 100 = -8.15%