Understand MIBC Output

Hi Gurus,

I have a question on MIBC result's output field "%".

Based on my understanding, this field displays the percentage of a material's consumption value based on the total consumption value.

I run MIBC with below options.

With that said, the sum of all "%" is not equal to 100.

Why is this not 100%?

What is the missing percentage?

Thank you in advance,

Eddie