-35.79% is the change from 623 to 400
Calculation steps:
[( 400 - 623 ) ÷ 623] x 100 = -35.79%
Formula
Percentage change = [(400 - 623) / 623] x 100
Subtract the new number by the original number
400 - 623 = -223
-223 ÷ 623 = -0.3579454253611557
-0.3579454253611557 x 100 = -35.79%