-33.72% is the change from 519 to 344
Calculation steps:
[( 344 - 519 ) ÷ 519] x 100 = -33.72%
Formula
Percentage change = [(344 - 519) / 519] x 100
Subtract the new number by the original number
344 - 519 = -175
-175 ÷ 519 = -0.3371868978805395
-0.3371868978805395 x 100 = -33.72%