-68.02% is the change from 519 to 166
Calculation steps:
[( 166 - 519 ) ÷ 519] x 100 = -68.02%
Formula
Percentage change = [(166 - 519) / 519] x 100
Subtract the new number by the original number
166 - 519 = -353
-353 ÷ 519 = -0.6801541425818882
-0.6801541425818882 x 100 = -68.02%