-98.65% is the change from 519 to 7
Calculation steps:
[( 7 - 519 ) ÷ 519] x 100 = -98.65%
Formula
Percentage change = [(7 - 519) / 519] x 100
Subtract the new number by the original number
7 - 519 = -512
-512 ÷ 519 = -0.9865125240847784
-0.9865125240847784 x 100 = -98.65%