Actual refers to something real or true, without exaggeration or change. It is used when you want to emphasise that something is exactly as it is, not imagined or estimated.
Example: The actual sales figures are impressive.
(This means the real or true sales figures, not any predicted or estimated ones.)

Actual = tatsächlich or wirklich

Current refers to something that is happening now or existing at the present time.
Example: The current sales figures are impressive.
(This means the sales figures right now, as of today or this period.)

Current = aktuell