-9.53% is the change from 556 to 503
Calculation steps:
[( 503 - 556 ) ÷ 556] x 100 = -9.53%
Formula
Percentage change = [(503 - 556) / 556] x 100
Subtract the new number by the original number
503 - 556 = -53
-53 ÷ 556 = -0.09532374100719425
-0.09532374100719425 x 100 = -9.53%