-59.92% is the change from 509 to 204
Calculation steps:
[( 204 - 509 ) ÷ 509] x 100 = -59.92%
Formula
Percentage change = [(204 - 509) / 509] x 100
Subtract the new number by the original number
204 - 509 = -305
-305 ÷ 509 = -0.5992141453831041
-0.5992141453831041 x 100 = -59.92%