-75.44% is the change from 509 to 125
Calculation steps:
[( 125 - 509 ) ÷ 509] x 100 = -75.44%
Formula
Percentage change = [(125 - 509) / 509] x 100
Subtract the new number by the original number
125 - 509 = -384
-384 ÷ 509 = -0.7544204322200393
-0.7544204322200393 x 100 = -75.44%