-40.27% is the change from 966 to 577
Calculation steps:
[( 577 - 966 ) ÷ 966] x 100 = -40.27%
Formula
Percentage change = [(577 - 966) / 966] x 100
Subtract the new number by the original number
577 - 966 = -389
-389 ÷ 966 = -0.4026915113871636
-0.4026915113871636 x 100 = -40.27%