-21.7% is the change from 447 to 350
Calculation steps:
[( 350 - 447 ) ÷ 447] x 100 = -21.7%
Formula
Percentage change = [(350 - 447) / 447] x 100
Subtract the new number by the original number
350 - 447 = -97
-97 ÷ 447 = -0.21700223713646533
-0.21700223713646533 x 100 = -21.7%