-86.32% is the change from 519 to 71
Calculation steps:
[( 71 - 519 ) ÷ 519] x 100 = -86.32%
Formula
Percentage change = [(71 - 519) / 519] x 100
Subtract the new number by the original number
71 - 519 = -448
-448 ÷ 519 = -0.8631984585741811
-0.8631984585741811 x 100 = -86.32%