-28.39% is the change from 479 to 343
Calculation steps:
[( 343 - 479 ) ÷ 479] x 100 = -28.39%
Formula
Percentage change = [(343 - 479) / 479] x 100
Subtract the new number by the original number
343 - 479 = -136
-136 ÷ 479 = -0.2839248434237996
-0.2839248434237996 x 100 = -28.39%