-34.67% is the change from 623 to 407
Calculation steps:
[( 407 - 623 ) ÷ 623] x 100 = -34.67%
Formula
Percentage change = [(407 - 623) / 623] x 100
Subtract the new number by the original number
407 - 623 = -216
-216 ÷ 623 = -0.3467094703049759
-0.3467094703049759 x 100 = -34.67%