You Do Need power plug adapter while traveling from Seychelles to Ghana.

Here is Why You Need An Adapter

The outlet and plug type used in Ghana are D and G and in Seychelles is G. This is how they look like.

Seychelles

In Seychelles, outlets of type G are in use.

Type G

Ghana

In Ghana, outlets of type D and G are in use.

Type D

Type G