-43.61% is the change from 509 to 287
Calculation steps:
[( 287 - 509 ) ÷ 509] x 100 = -43.61%
Formula
Percentage change = [(287 - 509) / 509] x 100
Subtract the new number by the original number
287 - 509 = -222
-222 ÷ 509 = -0.4361493123772102
-0.4361493123772102 x 100 = -43.61%