-10.22% is the change from 509 to 457
Calculation steps:
[( 457 - 509 ) ÷ 509] x 100 = -10.22%
Formula
Percentage change = [(457 - 509) / 509] x 100
Subtract the new number by the original number
457 - 509 = -52
-52 ÷ 509 = -0.10216110019646366
-0.10216110019646366 x 100 = -10.22%