If you bought the shares at 7.3 cents (the Current Price) and...

If you bought the shares at 7.3 cents (the Current Price) and you sold them on 30 April 2023 at 13 cents then the simple gain is 13/7.3 = 1.78 = 178%. Strictly speaking, you should subtract the original amount to get the 'gain'. In that case, the gain is 13-7.3 = 5.7c, and the percentage gain would be 5.7/7.3 = 0.78 = 78%.

As you said @Cyberguy, the table is meant to illustrate which is a better choice, options or shares, depending on what price you can buy them at and what you think the share price will get to by 30 April 2023.