How to calculate percentage between the range of two values a third value is

Question

Example:

I\'m trying to figure out the calculation for finding the percentage between two values that a third value is.

Example: The range is 46 to 195. The va

Answer 1

If you want to calculate the percentages of a list of values and truncate the values between a max and min you can do something like this:

private getPercentages(arr:number[], min:number=0, max:number=100): number[] {
  let maxValue = Math.max( ...arr );

  return arr.map((el)=>{
    let percent = el * 100 / maxValue;
    return percent * ((max - min) / 100) + min;
  });
};

Here the function call:

this.getPercentages([20,30,80,200],20,50);

would return

[23, 24.5, 32, 50]

where the percentages are relative and placed between the min and max value.