Cumulative Sum over Dates - Line Chart

[Anonymous]

I have a table like this one:

N° Plots	Planting Date
80
80
80
224
224	24/9/2019
80	24/9/2019
224
80
80
80
88

and I want to create this line chart:

The chart was not made with the data of the table, is just an example, I will try to explain it.

The chart shows the cumultative sums of planted plots up to the day when I make the report.

So, taking the information of the table, the first day (in the table 24/09/2019) the chart will show the percentage of the plots planted up to that day (204/1320 = 15 %). If another day I plant another 80 plots when I make the report the chart will show an advance in the planting process (284/1320 = 21.5 %). What remains to be planted (78.5 %) has to be show at the end of the plot indicating empty date.

The objective is to show the advance (each date is a Planting Date) of the Planting Process as the percentage of Plots planted from the Total Plots to be planted, the last point shows thew empty plots (not planted yet).

I tried to do it with Power Bi using the Cumulative Total but I get something like this:

Can you help me with it?

Thanks