-29.14% is the change from 453 to 321
Calculation steps:
[( 321 - 453 ) ÷ 453] x 100 = -29.14%
Formula
Percentage change = [(321 - 453) / 453] x 100
Subtract the new number by the original number
321 - 453 = -132
-132 ÷ 453 = -0.2913907284768212
-0.2913907284768212 x 100 = -29.14%