-14.93% is the change from 509 to 433
Calculation steps:
[( 433 - 509 ) ÷ 509] x 100 = -14.93%
Formula
Percentage change = [(433 - 509) / 509] x 100
Subtract the new number by the original number
433 - 509 = -76
-76 ÷ 509 = -0.14931237721021612
-0.14931237721021612 x 100 = -14.93%