Correct SUMMARIZATION in a SUMMARIZE TABLE

Hi there,

I need to achieve something and I know it's possible, only I don't know how and have spent too many days struggling with this. It will take me a bit to explain, so thanks in advance x your patience.

I have this table that has many more criteria but the ones that interest me are the ones shown. It's a built-in table (not in the P.Query) with the following dax:

TONS/PHASE TABLE = // en esta tabla los ratios están bien, cuando se ven por phase
    ADDCOLUMNS( 'Hours'
            ,"PHASE", RELATED('All_ALL'[PHASE])
            ,"ACT_FINISH_DATE", RELATED('All_ALL'[ACT_FINISH_DATE])
)

The last column is from the next measure:

ASSIGN_RATIO_BY_PHASE = 
VAR NUM_ = 
Calculate( 
    [ASSIGN_HRS_BY_PHASE],
         FILTER('TONS/PHASE TABLE', 'TONS/PHASE TABLE'[TEAM] = "CCB")
)

RETURN
DIVIDE( NUM_,  [ASSIGN_HRS_BY_PHASE], 0)

When I visualize the data by PROJECT and PHASE the ASSIGN_RATIO_BY_PHASE is exactly the figure that I need.

And since I need to apply it, I decided to SUMMARIZE another table just with the criteria required but, the results gives me different percentages that the one I visualize in the original Table 

The DAX used to SUMMARIZE the table is the following:

PROJECT/PHASE_RATIO = 
SUMMARIZE( 'TONS/PHASE TABLE'
          , 'TONS/PHASE TABLE'[PROJECT]
          , 'TONS/PHASE TABLE'[PHASE]
          , "ASSIGN_RATIO_BY_PHASE", 
                CALCULATE( [ASSIGN_RATIO_BY_PHASE]
                    , ALLEXCEPT( 'TONS/PHASE TABLE','TONS/PHASE TABLE'[PROJECT], 'TONS/PHASE TABLE'[PHASE] ) ) 
          , "RELEASE_TO_FAB_DATE", 
                CALCULATE( 
                    MAX( 'TONS/PHASE TABLE'[ACT_FINISH_DATE] )
                    , FILTER('TONS/PHASE TABLE', 'TONS/PHASE TABLE'[TASK] = "Release to Fabrication" )
                )
)

For the "ASSIGN_RATIO_BY_PHASE" column also tried with this option but with the exact same result

          , "ASSIGN_RATIO_BY_PHASE", 
                AVERAGEX( 
                    SUMMARIZE( 'TONS/PHASE TABLE','TONS/PHASE TABLE'[PROJECT], 'TONS/PHASE TABLE'[PHASE]) 
                    , [ASSIGN_RATIO_BY_PHASE] ) // Tried this to get the assignation ratio for project by Phase but got same result than metric

As I mentioned, I know that what I need is doable, just I can't figure it out so,
Help!