-4.52% is the change from 531 to 507
Calculation steps:
[( 507 - 531 ) ÷ 531] x 100 = -4.52%
Formula
Percentage change = [(507 - 531) / 531] x 100
Subtract the new number by the original number
507 - 531 = -24
-24 ÷ 531 = -0.04519774011299435
-0.04519774011299435 x 100 = -4.52%