-45.09% is the change from 519 to 285
Calculation steps:
[( 285 - 519 ) ÷ 519] x 100 = -45.09%
Formula
Percentage change = [(285 - 519) / 519] x 100
Subtract the new number by the original number
285 - 519 = -234
-234 ÷ 519 = -0.4508670520231214
-0.4508670520231214 x 100 = -45.09%