-81.12% is the change from 519 to 98
Calculation steps:
[( 98 - 519 ) ÷ 519] x 100 = -81.12%
Formula
Percentage change = [(98 - 519) / 519] x 100
Subtract the new number by the original number
98 - 519 = -421
-421 ÷ 519 = -0.8111753371868978
-0.8111753371868978 x 100 = -81.12%