-58.15% is the change from 509 to 213
Calculation steps:
[( 213 - 509 ) ÷ 509] x 100 = -58.15%
Formula
Percentage change = [(213 - 509) / 509] x 100
Subtract the new number by the original number
213 - 509 = -296
-296 ÷ 509 = -0.581532416502947
-0.581532416502947 x 100 = -58.15%