Running total, Mono poly style

Hi DouweMeer 

Thanks for the reply from Sahir_Maharaj and Greg_Deckler , please allow me to provide another insight:

Please try this measure:

MEASURE =
VAR _currentTurn =
    MAX ( 'Table'[Turn] )
VAR _vtable =
    ADDCOLUMNS (
        SELECTCOLUMNS (
            ALLSELECTED ( 'Table' ),
            'Table'[Earn/ Loss],
            "_Turn", 'Table'[Turn]
        ),
        "_CurrentBN",
            ROUND (
                SUMX (
                    FILTER ( ALLSELECTED ( 'Table' ), [Turn] <= EARLIER ( [_Turn] ) ),
                    'Table'[Earn/ Loss]
                ) / 200,
                0
            )
    )
VAR _vtable2 =
    ADDCOLUMNS (
        _vtable,
        "_previoudN",
            IF (
                MAXX ( FILTER ( _vtable, [_Turn] = EARLIER ( [_Turn] ) - 1 ), [_CurrentBN] ) > [_CurrentBN],
                1
            )
    )
VAR _vtable3 =
    ADDCOLUMNS (
        _vtable2,
        "Sort", RANKX ( FILTER ( _vtable2, [_previoudN] <> BLANK () ), [_Turn],, ASC )
    )
RETURN
    MAXX (
        FILTER (
            ADDCOLUMNS (
                _vtable3,
                "_outcome",
                    IF (
                        200
                            + SUMX (
                                FILTER (
                                    _vtable3,
                                    [Sort] = EARLIER ( [Sort] )
                                        && [_Turn] <= EARLIER ( [_Turn] )
                                ),
                                [Earn/ Loss]
                            ) < 0,
                        0,
                        200
                            + SUMX (
                                FILTER (
                                    _vtable3,
                                    [Sort] = EARLIER ( [Sort] )
                                        && [_Turn] <= EARLIER ( [_Turn] )
                                ),
                                [Earn/ Loss]
                            )
                    )
            ),
            _currentTurn = [_Turn]
        ),
        [_outcome]
    )

The result is as follow:

Best Regards

Zhengdong Xu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.