Hi,
Looking at you calls and layers, I have noted the following:
- 	
Your GetFeatureInfo and GetMap call are not calling the same layers: you have NDVI and NDVI_NEW
	 	- 	
NDVI is a layer which returns a visualisation of NDVI for SCL= vegetation + RGB for other surface types,
	 	- 	
NDVI_NEW returns a visualisation (RGB) of NDVI, but you are only returning the first 2 values.
	 
Therefore, in the URLS that you have posted, you are returning visualisation values and not actual NDVI values. If you want the “real” NDVI layer, I would recommend you add a layer in your configuration with the following Evalscript:
//VERSION=3
function setup() {
  return {
    input: ["B08", "B04"],
    output: { bands: 1, sampleType: "FLOAT32"}
  };
}
function evaluatePixel(sample) {
  var ndvi = index(sample.B08, sample.B04);
  return [ndvi];
}
Running GetFeatureInfo on this layer should return NDVI.