code: def __get_change(current, previous):
      if current == previous:
          return 0
      try:
          return (abs(current - previous) / previous) * 100.0
      except ZeroDivisionError:
          return float("inf")
  
file_path: serve/test/pytest/test_gRPC_inference_api.py
imports: import json
  import os
  import threading
  from ast import literal_eval
  import inference_pb2
  import management_pb2
  import test_gRPC_utils
  import test_utils
label_desc: Use image node_id 3 for calling a global function with example usage: __get_change(current, previous) and returns: int, unknown, float