-27.9% is the change from 509 to 367
Calculation steps:
[( 367 - 509 ) ÷ 509] x 100 = -27.9%
Formula
Percentage change = [(367 - 509) / 509] x 100
Subtract the new number by the original number
367 - 509 = -142
-142 ÷ 509 = -0.27897838899803534
-0.27897838899803534 x 100 = -27.9%