How can I calculate Gain or Loss percent based on the closing price?

[amin_mohammadi]

Hello,

How can I calculate Gain or Loss percent based on the closing price?

Thank you in advance

[Alain Verleyen]

amin_mohammadi:

Hello,

How can I calculate Gain or Loss percent based on the closing price?

Thank you in advance

What have you tried ? Please show your attempt.