-12.58% is the change from 596 to 521
Calculation steps:
[( 521 - 596 ) ÷ 596] x 100 = -12.58%
Formula
Percentage change = [(521 - 596) / 596] x 100
Subtract the new number by the original number
521 - 596 = -75
-75 ÷ 596 = -0.12583892617449666
-0.12583892617449666 x 100 = -12.58%