def get_scale_and_offset(input_value_range, input_value, target_dtype=unit16):

    target_max = np.iinfo(dtype).max
    target_min = np.iinfo(dtype).min
    target_range = target_max - target_min

    # Effective range of data
    input_min = min(values_range)
    input_range = max(values_range)-min(values_range)

    # Calculate scale factor
    scale_factor = input_range / target_range

    # Calculate offset to bring the minimum to target_minimum
    offset = input_min - target_min


    print(input_array * scale_factor + offset)

get_scale_and_offset([0, 1000], 68.235)
>>> 68.22499427786678