DAX ALLEXCEPT not keeping total amount when filtering

Hi,

I am trying to keep the aggregated amount when applying a filter with the exception of two filters, but it changes the amount anyway.

I am using the following DAX code:

Total Incrementos 1 = calculate(sum(VW_CAMBIOS_COMPROMISO[CAMBIOS]);
ALLEXCEPT(VW_CAMBIOS_COMPROMISO;
VW_CAMBIOS_COMPROMISO[FEC_CAMBIO];
VW_CAMBIOS_COMPROMISO[TIPO_CAMBIO]))

I want the sum of 'CAMBIOS' and the only filters that should apply are 'FEC_CAMBIO' and 'TIPO_CAMBIO'

In the next screenshot you can see that the total amount after applying the two filters ('FEC_CAMBIO' and 'TIPO_CAMBIO') is 4.263, which is correct. 

But it should also keep the amount for 'TECNICA' but as you can see from the screenshot, when I filter by 'DTD' it sums 4236 instead of 4263:

What I finally want is to show the proportion of the filtered item relative to the total.

I hope someone knows how to solve this.

I have also tried the following code without any success:

TOTAL INCREMENTOS2 = CALCULATE(sum(VW_CAMBIOS_COMPROMISO[CAMBIOS]);
ALL(VW_CAMBIOS_COMPROMISO);
values(VW_CAMBIOS_COMPROMISO[TIPO_CAMBIO]);
values(VW_CAMBIOS_COMPROMISO[FEC_CAMBIO]))