-62.28% is the change from 509 to 192
Calculation steps:
[( 192 - 509 ) ÷ 509] x 100 = -62.28%
Formula
Percentage change = [(192 - 509) / 509] x 100
Subtract the new number by the original number
192 - 509 = -317
-317 ÷ 509 = -0.6227897838899804
-0.6227897838899804 x 100 = -62.28%