INCORRECT MATRIX TOTAL

Hi Varpat 

You can try using this:-

Sum of all sales_Value =
DIVIDE(
SWITCH(
TRUE(),
VALUES('Sheet1'[Currency]) = "USD Dynamic", SUM(V_NIELSEN_FACT_SALES_SUMMARY_TABLE[SALES_VALUE_USD]),
VALUES('Sheet1'[Currency]) = "Local Currency", SUM(V_NIELSEN_FACT_SALES_SUMMARY_TABLE[SALES_VALUE]),
VALUES('Sheet1'[Currency]) = "USD Budgeted",
SUMX(
V_NIELSEN_FACT_SALES_SUMMARY_TABLE,
V_NIELSEN_FACT_SALES_SUMMARY_TABLE[SALES_VALUE]
* CALCULATE(
AVERAGE(DIM_FOREX[FOREX]),
USERELATIONSHIP(V_NIELSEN_FACT_SALES_SUMMARY_TABLE[Brand Key Forex], DIM_FOREX[Key])
)
),
BLANK()
),
1000000
) + CALCULATE(
SUM(V_NIELSEN_FACT_SALES_SUMMARY_TABLE[SALES_VALUE]),
PREVIOUSMONTH('Date'[Date])
)

I hope this will help.
Thank You.