-21.69% is the change from 438 to 343
Calculation steps:
[( 343 - 438 ) ÷ 438] x 100 = -21.69%
Formula
Percentage change = [(343 - 438) / 438] x 100
Subtract the new number by the original number
343 - 438 = -95
-95 ÷ 438 = -0.21689497716894976
-0.21689497716894976 x 100 = -21.69%