convertData.js

const data = {
  title: "company",
  white: 44,
  black: 3,
  asian: 23,
  hispanic: 5,
  undefined: 25,
};

// this.props.data["white"] === 44

const drawArc = (data) => console.log(`Draw ${data.label} with value of ${data.value} starts at ${data.startValue}`);

const convertData = () => {
  Object.keys(data).reduce((a, b) => {
    if (b !== "title") {
      drawArc({
        label: b,
        value: data[b],
        startValue: a,
      });
    }
        
    return b !== "title" ? a + data[b] : 0;
  }, 0);  
}

convertData();