-40.13% is the change from 456 to 273
Calculation steps:
[( 273 - 456 ) ÷ 456] x 100 = -40.13%
Formula
Percentage change = [(273 - 456) / 456] x 100
Subtract the new number by the original number
273 - 456 = -183
-183 ÷ 456 = -0.40131578947368424
-0.40131578947368424 x 100 = -40.13%