As a user I'd like to have a Percent option in the stacked select.
How it works now:

The Y axe consists of values (from 0 to 1) which reflect a ratio between lines. The 1 means 100%.
In absolute values IT and US have got the same value: 51 (on May 11, 2019). In relative values the both have got 0.5 of 1. 0.5 + 0.5 = 1.
Regarding the migration we should keep previous functionality and implement the feature in new charts.
As a user I'd like to have a
Percentoption in the stacked select.How it works now:

The Y axe consists of values (from 0 to 1) which reflect a ratio between lines. The 1 means 100%.
In absolute values IT and US have got the same value: 51 (on May 11, 2019). In relative values the both have got 0.5 of 1. 0.5 + 0.5 = 1.
Regarding the migration we should keep previous functionality and implement the feature in new charts.