{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "div",
  "style": {
    "position": "relative"
  },
  "children": [
    {
      "elmType": "div",
      "attributes": {
        "class": "=if([$DueDate] <= @now, 'sp-field-severity--severeWarning', if(1 - Number([$DueDate] - @now) / Number([$DueDate] - [$StartDate]) >= 0.7, 'sp-field-severity--warning', 'sp-field-severity--good'))"
      },
      "style": {
        "min-height": "inherit",
        "width": "=if([$DueDate] <= @now, '100%', (1 - Number([$DueDate] - @now) / Number([$DueDate] - [$StartDate])) * 100 + '%')"
      }
    },
    {
      "elmType": "span",
      "txtContent": "@currentField",
      "style": {
        "position": "absolute",
        "left": "8px"
      },
      "attributes": {
        "class": "ms-fontColor-neutralSecondary"
      }
    }
  ]
}