-8.45% is the change from 497 to 455
Calculation steps:
[( 455 - 497 ) ÷ 497] x 100 = -8.45%
Formula
Percentage change = [(455 - 497) / 497] x 100
Subtract the new number by the original number
455 - 497 = -42
-42 ÷ 497 = -0.08450704225352113
-0.08450704225352113 x 100 = -8.45%