-27.61% is the change from 623 to 451
Calculation steps:
[( 451 - 623 ) ÷ 623] x 100 = -27.61%
Formula
Percentage change = [(451 - 623) / 623] x 100
Subtract the new number by the original number
451 - 623 = -172
-172 ÷ 623 = -0.27608346709470305
-0.27608346709470305 x 100 = -27.61%