-7.24% is the change from 456 to 423
Calculation steps:
[( 423 - 456 ) ÷ 456] x 100 = -7.24%
Formula
Percentage change = [(423 - 456) / 456] x 100
Subtract the new number by the original number
423 - 456 = -33
-33 ÷ 456 = -0.07236842105263158
-0.07236842105263158 x 100 = -7.24%