-13.38% is the change from 396 to 343
Calculation steps:
[( 343 - 396 ) ÷ 396] x 100 = -13.38%
Formula
Percentage change = [(343 - 396) / 396] x 100
Subtract the new number by the original number
343 - 396 = -53
-53 ÷ 396 = -0.13383838383838384
-0.13383838383838384 x 100 = -13.38%