Custom visual for entering free text data

Hello,

Do we have a custom visual wherein I can enter free text data (numbers to be specific) and use that value in other visuals. This is more like a What-If analysis.

For ex, if I have to project the Sales for next quarter based on the Discount offered- then I want to have a free text field wherein I can enter the Discount value and use that value to calculate the projected Sales for next quarter.

Thanks in advance,

Ajay