-9.26% is the change from 497 to 451
Calculation steps:
[( 451 - 497 ) ÷ 497] x 100 = -9.26%
Formula
Percentage change = [(451 - 497) / 497] x 100
Subtract the new number by the original number
451 - 497 = -46
-46 ÷ 497 = -0.0925553319919517
-0.0925553319919517 x 100 = -9.26%