What DIFOT means
DIFOT usually means delivered in full, on time. Retailers use it to score whether the ordered quantity arrived inside the booked receiving window. Suppliers get caught when the label sounds simple but the scorecard basis is not visible.
The basic calculation
The common starting point is:
DIFOT % = (deliveries that were in full and on time / total deliveries) x 100
Some retailers measure at order level. Others measure at line, case, or unit level. Some use gate-in time. Others use unload-complete time. That is why the scorecard basis matters more than the formula headline.