-28.19% is the change from 447 to 321
Calculation steps:
[( 321 - 447 ) ÷ 447] x 100 = -28.19%
Formula
Percentage change = [(321 - 447) / 447] x 100
Subtract the new number by the original number
321 - 447 = -126
-126 ÷ 447 = -0.28187919463087246
-0.28187919463087246 x 100 = -28.19%