-4.32% is the change from 509 to 487
Calculation steps:
[( 487 - 509 ) ÷ 509] x 100 = -4.32%
Formula
Percentage change = [(487 - 509) / 509] x 100
Subtract the new number by the original number
487 - 509 = -22
-22 ÷ 509 = -0.043222003929273084
-0.043222003929273084 x 100 = -4.32%