Consult a problem about "bucket_script and sum_bucket "

Elastic Stack Elasticsearch
1

data source:

area amout
bj 100
sh 200
sh 200

I need calculate the result:

area amout percentage
bj 300 300/500
sh 200 200/500

How to achieve this? thanks!

I try to do this，but it is wrong.

curl -X POST "http://localhost:9200/corp_info6/_doc/_search" -H 'Content-Type: application/json' -d'
{
"aggs": {
"ind_terms": {

  "terms": {
    "field": "area"
  },
  "aggs": {
    "sum_weight": {
      "sum": {
        "field": "amout "
      } 
    },
      "t-percentage": {
                "bucket_script": {
                    "buckets_path": {
                      "sum1": "sum_weight",
                      "total": "sum_sum_weight"
                    },
                    "script": "params.sum1 / params.total "
                }
            }
    }     
},
    "sum_sum_weight": {
        "sum_bucket": {
            "buckets_path": "ind_terms>sum_weight" 
        }
    }

}
}'

2

please!

3

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