const bigPercent = (num) => (num * 10**16 / 10**18).toString()

function moveDecimalLeft (number, places) {
  if (places < 0) {
    console.log("'places' parameter must be >= 0")
  return
  }
  const zeros = Array(places).fill("0");
  let numArr = [...zeros, ...number.toString().split("")];
  let idx = numArr.indexOf(".")
  idx < 0
    ? numArr.splice(numArr.length - places, 0, ".")
    : numArr.splice(idx - places, 0, numArr.splice(idx, 1))
  return parseFloat(numArr.join("")).toString()
}