-4.5% is the change from 555 to 530
Calculation steps:
[( 530 - 555 ) ÷ 555] x 100 = -4.5%
Formula
Percentage change = [(530 - 555) / 555] x 100
Subtract the new number by the original number
530 - 555 = -25
-25 ÷ 555 = -0.04504504504504504
-0.04504504504504504 x 100 = -4.5%