-28.35% is the change from 448 to 321
Calculation steps:
[( 321 - 448 ) ÷ 448] x 100 = -28.35%
Formula
Percentage change = [(321 - 448) / 448] x 100
Subtract the new number by the original number
321 - 448 = -127
-127 ÷ 448 = -0.28348214285714285
-0.28348214285714285 x 100 = -28.35%