Forum Discussion
Sliding scale and to return a percent based an a range in reverse order
I want to return a percent based on a scale that is in reverse order. ie lower number is the better number.
Example
50% $12.50
75% $11.00
100% $9.75
Lookup value $10.55 is "What Percentage?" based on the chart above?
2 Replies
Do you want linear interpolation? If so:
Let's say the lookup value is in D1.
The percentage is
=IF(D1<9.75,"?",IF(D1<11,100%-(D1-9.75)/(11-9.75)*(100%-75%),IF(D1<=12.5,(D1-11)/(12.5-11)*(75%-50%),"?")))
