Hello, 

I'm very new to Zoho and I don't seem to understand properly how the formula field works. 

I want to create a very simple formula that Calculates 15% of the Amount field in our deals form, but I don't seam to find the right formula, keep saying I'm missing braces. 

See formula I'm using:

${Deals.Amount})-((${Deals.Amount})*15%)))

Anyone?