Currency translation method

I don’t understand this, there are two ways of translating from foreign currency for an investment to domestic currency. Which method is correct?

The two questions are essentially the same, but the method in the solutions by UpperMark is different in the final step.

The method used in the UpperMark Notebook in Example 3 is return * (1 +/- currency movement %).

The method used in Qbank is return in % +/- currency movement %.

This leads to vastly different answer.

Which method is the correct one?