Calculate discount or premium to NTA for an LIC

calcNtaDiscountPercentage.ts

/* Calculate whether a LIC is trading at a Premium or Discount  */
function calcNtaDiscountPercentage(
  lastAsx200: number,
  currentAsx200: number,
  lastNta: number,
  currentPrice: number
) {
  const estimatedNta = (currentAsx200 / lastAsx200) * lastNta;
  const result = (estimatedNta - currentPrice) / estimatedNta;
  return +(result * 100).toFixed(3);
}

// console.log(calcNtaDiscountPercentage(5076.8, 5313, 1.89, 1.995));