-51.06% is the change from 519 to 254
Calculation steps:
[( 254 - 519 ) ÷ 519] x 100 = -51.06%
Formula
Percentage change = [(254 - 519) / 519] x 100
Subtract the new number by the original number
254 - 519 = -265
-265 ÷ 519 = -0.5105973025048169
-0.5105973025048169 x 100 = -51.06%