-21.88% is the change from 448 to 350
Calculation steps:
[( 350 - 448 ) ÷ 448] x 100 = -21.88%
Formula
Percentage change = [(350 - 448) / 448] x 100
Subtract the new number by the original number
350 - 448 = -98
-98 ÷ 448 = -0.21875
-0.21875 x 100 = -21.88%