How to get total percent distribution out of 100% for the underlying denominator for each column in angular 8

I have simple function of calculating the sum of numbers and strings in columns in a table. The sum works well and gives me correct results. The issue is that whenever I try to divide the total sum of each column with 100 I end up with wrong values

Scenario A

I have a sum of 969.35 in column A, whenever I divide the value with 100 I expect to get 9.69 but I end up with 0.51 . Am not sure why this is being calculated as so.

This is my implementation of getting the sum

getSum(columnNumber) {      let sum = 0;      const columnNumberToPropertyMap = [        "id",        "teamNumber",        "rural",        "completed",        "entirehouseholdabsent",        "postponed",        "refused",        "vacant",        "dwelling"           ];      const property = columnNumberToPropertyMap[columnNumber];      return this.rural.reduce((acc, curr) => {        //const adder = Number(curr[property]) || 0;        const adder = isNaN(Number(curr[property])) ? 0 : Number(curr[property]);        sum = acc + adder        return sum;      }, 0).toFixed(2);    }  

the above code works well as I can get the sum of each coiumn.

How I am trying to get the percentage

 getSum(columnNumber) {          let sum = 0;          let percentage = 0;          const columnNumberToPropertyMap = [            "id",            "teamNumber",            "rural",            "completed",            "entirehouseholdabsent",            "postponed",            "refused",            "vacant",            "dwelling"               ];          const property = columnNumberToPropertyMap[columnNumber];          return this.rural.reduce((acc, curr) => {            //const adder = Number(curr[property]) || 0;            const adder = isNaN(Number(curr[property])) ? 0 : Number(curr[property]);            sum = acc + adder            percentage = (sum)/100;            return percentage ;          }, 0).toFixed(2);        }  

What am I doing wrong?

https://stackoverflow.com/questions/66620713/how-to-get-total-percent-distribution-out-of-100-for-the-underlying-denominator March 14, 2021 at 11:07AM