Trending @Accenture; Need suggestion in Salary negotiation

I cleared the technical rounds in one of the big 4 companies for SAP SD role, and they were offering about 40-50% base hike over my current fixed CTC.

I have requested for an additional 10-15% on the number which they shared. So targeting a total hike around 60-70%.

HR mentioned, they will discuss with their Business partner and get back.

Question - Is the % fair enough which is asked or did I cut down my chances.

I have asked for about 70% hike in base bcs over past 2 yrs there’s been no hike in accenture. So with 6 yrs of experience it made sense. Can anyone help on telling me how this goes ?