-3.19% is the change from 596 to 577
Calculation steps:
[( 577 - 596 ) ÷ 596] x 100 = -3.19%
Formula
Percentage change = [(577 - 596) / 596] x 100
Subtract the new number by the original number
577 - 596 = -19
-19 ÷ 596 = -0.031879194630872486
-0.031879194630872486 x 100 = -3.19%