calculate percentage of weight loss-percentage id1 copy
{"Image ImageDescription": "Before and after pictures of man with 16 months nutrition and exercise changes and losing 180 lbs.", "Image Make": "Canon", "Image Model": "Canon EOS 5D Mark II", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Lightroom 4.3 (Macintosh)", "Image DateTime": "2013:01:25 17:08:15", "Image Artist": "Mark Hayes Photography", "Image Copyright": "Mark Hayes", "Image ExifOffset": "388", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1000", "Thumbnail JPEGInterchangeFormatLength": "10649", "EXIF ExposureTime": "1/160", "EXIF FNumber": "11", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "125", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2011:04:15 12:06:36", "EXIF DateTimeDigitized": "2011:04:15 12:06:36", "EXIF ShutterSpeedValue": "915241/125000", "EXIF ApertureValue": "6918863/1000000", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "3", "EXIF SubjectDistance": "423/100", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "85", "EXIF SubSecTimeOriginal": "97", "EXIF SubSecTimeDigitized": "97", "EXIF FocalPlaneXResolution": "2784000/1459", "EXIF FocalPlaneYResolution": "928000/479", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF BodySerialNumber": "820501233", "EXIF LensSpecification": "[70, 200, 0/0, 0/0]", "EXIF LensModel": "EF70-200mm f/2.8L IS USM"}