Hello,
What I understood from your given Attachment file is that, you have added that asset in January, and your current period is Jun as you said, the period that passed from date of your asset requisition is 5 months and you have chosen the asset life for 3 yrs from which 5 months had been passed and the depreciation had been applied according to the Straight Line Method(STL).
So, the remaining Life of the asset would remain 2yrs and 7 month.

Best Regards,
Syed Saad Ali.