Can someone help me understand the difference between these four variables? 

1. Sprint: Completion Items
2. Sprint: Completion Forecast Items
3. Sprint: Completion Story Points
4. Sprint: Completion Forecast Story Points

I want to pull in % of our CLOSED points / CURRENT points. For us, that value should be around 44.30%, but we're getting the below for each of these:

1. Sprint: Completion Items (50%)
2. Sprint: Completion Forecast Items (43.90%)
3. Sprint: Completion Story Points (46%)
4. Sprint: Completion Forecast Story Points (41.44%)

For context, below sprint numbers:

• CLOSED = 2547 points
• CURRENT = 5749 points
• FORECAST = 5584 points