-39.47% is the change from 451 to 273
Calculation steps:
[( 273 - 451 ) ÷ 451] x 100 = -39.47%
Formula
Percentage change = [(273 - 451) / 451] x 100
Subtract the new number by the original number
273 - 451 = -178
-178 ÷ 451 = -0.3946784922394678
-0.3946784922394678 x 100 = -39.47%