-86.51% is the change from 519 to 70
Calculation steps:
[( 70 - 519 ) ÷ 519] x 100 = -86.51%
Formula
Percentage change = [(70 - 519) / 519] x 100
Subtract the new number by the original number
70 - 519 = -449
-449 ÷ 519 = -0.8651252408477842
-0.8651252408477842 x 100 = -86.51%