-7.07% is the change from 509 to 473
Calculation steps:
[( 473 - 509 ) ÷ 509] x 100 = -7.07%
Formula
Percentage change = [(473 - 509) / 509] x 100
Subtract the new number by the original number
473 - 509 = -36
-36 ÷ 509 = -0.07072691552062868
-0.07072691552062868 x 100 = -7.07%