Create a Dax when user key in %, line graph will change accordingly

[NickProp28]

Dear Community, Would like to ask is possible to create a forecast line graph depend on user key in the % increase/decrease. 

The new line (RED) is depend on revenue, and user can key in %. Result line will change according.

If user want to see 5% of next year january increase,they can key in 5%. And red line will change (*5% with current Jan revenue).

Not sure is possible to have this function in power bi. Kindly advice.

Pbix: https://ufile.io/nih26zsa

Appreciate your help and time.

[amitchandak · Accepted solution]

@NickProp28 , Not very clear. Create a what-if parameter - https://community.powerbi.com/t5/Desktop/what-if-parameters-for-product-allocation/m-p/1404026#M5951...

And create a measure like

new measure = [measure] * parameter[parameter]

or

new measure = [measure] * (100+ parameter[parameter])/100