Need help with summarized table

Hi,

I am not sure about the logic of creating [Total] column in the new table, but please try something like below to have one more column in the new table.

EVALUATE
	VAR CustomerOrders = ADDCOLUMNS(
		SUMMARIZE(
			Orders,
			Orders[Klient_Nazwa],
			Orders[Data Zamówienia],
			"Year", YEAR(Orders[Data Zamówienia]),
			"TotalSales", SUM(Orders[Sprzedaż]),
			"TotalOrders", DISTINCTCOUNT(Orders[ ID Zamówienia])
		),
		"TotalOrdersByClient", CALCULATE(
			SUMX(
				SUMMARIZE(
					Orders,
					Orders[Klient_Nazwa],
					"TotalOrders", DISTINCTCOUNT(Orders[ ID Zamówienia])
				),
				[TotalOrders]
			),
			ALLEXCEPT(
				Orders,
				Orders[Klient_Nazwa]
			)
		),
		"Segment", IF(
			CALCULATE(
				SUMX(
					SUMMARIZE(
						Orders,
						Orders[Klient_Nazwa],
						"TotalOrders", DISTINCTCOUNT(Orders[ ID Zamówienia])
					),
					[TotalOrders]
				),
				ALLEXCEPT(
					Orders,
					Orders[Klient_Nazwa]
				)
			) <= 2,
			"New",
			"Returning"
		)
	)

	VAR CustomerOrdersGrouped = GROUPBY(
		FILTER(
			CustomerOrders,
			[Segment] = "New"
		),
		[Year],
		"TOTAL",
		SUMX(
			CURRENTGROUP(),
			[TotalSales]
		)
	)
	RETURN
		ADDCOLUMNS(
			CustomerOrdersGrouped,
			"Cumulative", SUMX(
				FILTER(
					CustomerOrdersGrouped,
					[Year] <= EARLIER([Year])
				),
				[TOTAL]
			)
		)