-28.99% is the change from 483 to 343
Calculation steps:
[( 343 - 483 ) ÷ 483] x 100 = -28.99%
Formula
Percentage change = [(343 - 483) / 483] x 100
Subtract the new number by the original number
343 - 483 = -140
-140 ÷ 483 = -0.2898550724637681
-0.2898550724637681 x 100 = -28.99%