Tableau百分比计算

使用表计算时，值将根据视域和所使用的计算类型而有所不同。例如，table down将从上至下进行table across计算，从左至右进行计算。这样，您将看到许多其他计算选项。

In below example I have used running total with table across that is direction from Left to Right column values (2014,2015,2016,2017,2018).

Example:
Image1 - Original Data(without table calculation)

Data with table calculation - running total(table across)
In below image, Left to Right values are Ship Dates against Segments. Look at the Yellow color highlighted row. Year 2015 for Consumer Segment the sales value is 40,656 but in the original data(Image1) it is 24,635. The reason it is showing 40,656 is because table calculation is performed with running total by table across(left to right), so the original value 24,635 is added with previous Year's(2014) value 16,021. Hence 16021 + 24635 = 40656. It means Left value(16021) is added with the Right value(24635). This pattern will continue till the right most value.
Image2

列和行被切换
在以下图像（的Image3）Left to Right的值是Segments against Ship Dates。列和行被切换。值Corporate段为2014年更改为25950(blue circle)，因为left side value 16021是added with the original value 9929(Image1)。
图3