-7.28% is the change from 453 to 420
Calculation steps:
[( 420 - 453 ) ÷ 453] x 100 = -7.28%
Formula
Percentage change = [(420 - 453) / 453] x 100
Subtract the new number by the original number
420 - 453 = -33
-33 ÷ 453 = -0.0728476821192053
-0.0728476821192053 x 100 = -7.28%