Calculate Field tool not reading the Get Field Value

[JssrRR]

I am trying to calculate percent population using this model, it runs gives no error but the PctPop field is not giving the correct value, it just putting the SUM_POPULATION in place of calculating the percentage, as seen the table included in the image.

Also under current session, it has no results under geoprocessing, after the model runs, why is that?

[JssrRR]

Chris,

I have published geoprocessing services from the results window, after running a model, in this same version, before and it worked fine.  It has to do with a tool or a setting in this particular model which is not sending results.