I can't use a column in a chart

[SimonSeez]

Hello, I have a column "Target by KPI Target" in a table. It contains targets set for certain units. I intend to create a chart using values in this column. When I select it with a table visual, it displays the contents. However, it does not give a total sum. When I select it with a column chart, it does not display the chart. It only shows the values as legends. 

I looked at the column and noticed it does not have the sigma sign beside it. Could this be the reason why? If so, how can I convert it into a value I can use. In Power Query, I already made the column that contains these values a number and decimal. Both did not work. 

Thank you.