-0.22% is the change from 456 to 455
Calculation steps:
[( 455 - 456 ) ÷ 456] x 100 = -0.22%
Formula
Percentage change = [(455 - 456) / 456] x 100
Subtract the new number by the original number
455 - 456 = -1
-1 ÷ 456 = -0.0021929824561403508
-0.0021929824561403508 x 100 = -0.22%