-34.51% is the change from 623 to 408
Calculation steps:
[( 408 - 623 ) ÷ 623] x 100 = -34.51%
Formula
Percentage change = [(408 - 623) / 623] x 100
Subtract the new number by the original number
408 - 623 = -215
-215 ÷ 623 = -0.3451043338683788
-0.3451043338683788 x 100 = -34.51%