-99.61% is the change from 519 to 2
Calculation steps:
[( 2 - 519 ) ÷ 519] x 100 = -99.61%
Formula
Percentage change = [(2 - 519) / 519] x 100
Subtract the new number by the original number
2 - 519 = -517
-517 ÷ 519 = -0.9961464354527938
-0.9961464354527938 x 100 = -99.61%