Question Convert Percentage Data Into UI Rect Position

I have different country maps to show within the gameplay and for different stats of country I want to show level button at correct its stats position.

Through web service level button data coming into the percentage form range from 0 to 100%.

This percentage data, I have to convert into pixels from available Map image.



At present, I have placed level buttons at random position.
Now how to convert pixel data into RectTransform position that is confusing for me.

I have tried this code:

Code (CSharp):

1. float xPos = (thisLevel.mapPositionX * containerWidth) / 100;
2. float yPos = (thisLevel.mapPositionY * containerHeight) / 100;
3.  
4. Vector3 buttonPosition = new Vector3(xPos, yPos, 0f);
5. buttonPosition = levelButtonsContainer.InverseTransformVector(buttonPosition);

But this giving me weird result.
For level buttons container image I have set center for pivot and anchor.
Please share your suggestion for this.