-34.3% is the change from 516 to 339
Calculation steps:
[( 339 - 516 ) ÷ 516] x 100 = -34.3%
Formula
Percentage change = [(339 - 516) / 516] x 100
Subtract the new number by the original number
339 - 516 = -177
-177 ÷ 516 = -0.3430232558139535
-0.3430232558139535 x 100 = -34.3%