-28.82% is the change from 451 to 321
Calculation steps:
[( 321 - 451 ) ÷ 451] x 100 = -28.82%
Formula
Percentage change = [(321 - 451) / 451] x 100
Subtract the new number by the original number
321 - 451 = -130
-130 ÷ 451 = -0.28824833702882485
-0.28824833702882485 x 100 = -28.82%