Visual Calculations/ DAX Measure - Total Incorrect on Table Visual

Hi Deelip  - you should modify your measure using sumx on tht table.

Availability_Corrected =
SUMX(
'product tbl',
VAR _PO_QTY = CALCULATE(SUM('product tbl'[PO_Qty]))
VAR _PREBOOK_QTY = CALCULATE(SUM('product tbl'[PreBookQty]))
VAR _PLANTED_QTY =
SUMX(
FILTER('Dynamic', 'Dynamic'[plantState] = "Realized"),
'Dynamic'[quantity]
) + CALCULATE(SUM(Overdue[quantity]))

VAR _PLANNED_QTY =
SUMX(
FILTER('Dynamic', 'Dynamic'[planState] = "Budget"),
'Dynamic'[quantity]
) + CALCULATE(SUM('External Bookings'[Booked Qty]))

RETURN
IF(
NOT(ISBLANK(_PLANTED_QTY)),
_PLANTED_QTY - _PO_QTY - _PREBOOK_QTY,
_PLANNED_QTY - _PO_QTY - _PREBOOK_QTY
)
)

try this in report and hope it works.