-73.09% is the change from 457 to 123
Calculation steps:
[( 123 - 457 ) ÷ 457] x 100 = -73.09%
Formula
Percentage change = [(123 - 457) / 457] x 100
Subtract the new number by the original number
123 - 457 = -334
-334 ÷ 457 = -0.7308533916849015
-0.7308533916849015 x 100 = -73.09%
Example