The parameter
to use for each bar, which is an offset of the ending value for the
previous bar, in a waterfall chart display.
The magnitude
of the last bar in the chart is the sum of the differences of all
previous bars. If the values in the difference column are -500, 700,
100, the first bar goes from 0 to -500, the second bar goes from -500
to 200, and the third bar goes from 200 to 300.