I have a table like the below.
Paginators are manullay using tab stops and adjusting the "Align to Decimal Tab"
Your question's a bit confusing, because your example does not show any decimal points! Perhaps it would be good for you to show a screenshot from InDesign with Hidden Characters enabled and the Tab ruler visible so we can see what is going on.
What do you want to do, though? My guess is you want to right-align the text, then go through and find the entry with the most characters to the right of a decimal point and set a decimal tab based on that entry, and apply it to the entire column. Sounds pretty easy!