-28.6% is the change from 479 to 342
Calculation steps:
[( 342 - 479 ) ÷ 479] x 100 = -28.6%
Formula
Percentage change = [(342 - 479) / 479] x 100
Subtract the new number by the original number
342 - 479 = -137
-137 ÷ 479 = -0.2860125260960334
-0.2860125260960334 x 100 = -28.6%