-0.24% is the change from 423 to 422
Calculation steps:
[( 422 - 423 ) ÷ 423] x 100 = -0.24%
Formula
Percentage change = [(422 - 423) / 423] x 100
Subtract the new number by the original number
422 - 423 = -1
-1 ÷ 423 = -0.002364066193853428
-0.002364066193853428 x 100 = -0.24%