-31.89% is the change from 577 to 393
Calculation steps:
[( 393 - 577 ) ÷ 577] x 100 = -31.89%
Formula
Percentage change = [(393 - 577) / 577] x 100
Subtract the new number by the original number
393 - 577 = -184
-184 ÷ 577 = -0.3188908145580589
-0.3188908145580589 x 100 = -31.89%