Weird Behavior in YOY analysis?

Hi PBI Gurus,

I'm requesting your help in trying to figure out some weird behavior of Power BI. 

Take a look at my screenshot. The top graph is displaying correct data. The following fields are being used:

Total Shipped Orders = DISTINCTCOUNT (Orders)

Axis is Month ( from date table )

Legend is Year ( from date table )

The bottom graph is showing incorrect data for THIS YEAR. ( It seems to be adding this year and last year together )

Total Shipped Orders LY = CALCULATE( [Total Shipped Orders] , SAMEPERIODLASTYEAR( [Date] ))

You can see the correct, verified values in the table below both graphs.

The reason this is causing me trouble, is because I want to display a bar chart below the top graph that is % difference from last year. However, because it is not calculating current year correctly, the % change is obviously different. 

My % change measure is, % Change = DIVIDE ( [Total Shipped Orders LY] - [Total Shipped Orders] , [Total Shipped Orders LY], 0 )

For example, June % change is showing me an INCREASE of 81%, when in actuality, it should be a DECREASE of -18.5%.

Any idea of why this is happening? Or more importantly, how to fix it?

Thank you so much!