-30.85% is the change from 496 to 343
Calculation steps:
[( 343 - 496 ) ÷ 496] x 100 = -30.85%
Formula
Percentage change = [(343 - 496) / 496] x 100
Subtract the new number by the original number
343 - 496 = -153
-153 ÷ 496 = -0.3084677419354839
-0.3084677419354839 x 100 = -30.85%