-9.07% is the change from 496 to 451
Calculation steps:
[( 451 - 496 ) ÷ 496] x 100 = -9.07%
Formula
Percentage change = [(451 - 496) / 496] x 100
Subtract the new number by the original number
451 - 496 = -45
-45 ÷ 496 = -0.0907258064516129
-0.0907258064516129 x 100 = -9.07%