arr = number 20 processType Order number 40 processType Inquiry number 60 processType Visit number 80 processType Click number 100 processType Show

const total = arr.reduce((sum, obj) => sum + obj.number, 0); const newArr = arr.map(obj => { const percentage = obj.number / total * 100; return { value: obj.number, name: obj.processType, percentage: Math.round(percentage) }; });