-97.69% is the change from 519 to 12
Calculation steps:
[( 12 - 519 ) ÷ 519] x 100 = -97.69%
Formula
Percentage change = [(12 - 519) / 519] x 100
Subtract the new number by the original number
12 - 519 = -507
-507 ÷ 519 = -0.976878612716763
-0.976878612716763 x 100 = -97.69%