-23.49% is the change from 447 to 342
Calculation steps:
[( 342 - 447 ) ÷ 447] x 100 = -23.49%
Formula
Percentage change = [(342 - 447) / 447] x 100
Subtract the new number by the original number
342 - 447 = -105
-105 ÷ 447 = -0.2348993288590604
-0.2348993288590604 x 100 = -23.49%