-4.52% is the change from 509 to 486
Calculation steps:
[( 486 - 509 ) ÷ 509] x 100 = -4.52%
Formula
Percentage change = [(486 - 509) / 509] x 100
Subtract the new number by the original number
486 - 509 = -23
-23 ÷ 509 = -0.04518664047151277
-0.04518664047151277 x 100 = -4.52%