如何在Retrofit中以百分比形式展示Response的获取进度？

有时获取JSON格式的响应可能需要几分钟，原因是响应中包含大量对象。我想要实现的是展示响应的获取进度。以下是我简化后的Retrofit获取响应示例代码：

UserApi接口 #

@GET("users")
@Headers(
    "Accept:$HEADERS_ACCEPT", "Content-Type:$HEADERS_CONTENT_TYPE",
    "Authorization: $AUTHORISATION_TYPE $API_KEY"
)
fun getUsersList(@Query("page") pageNo: String, @Query("per_page") perPageNo: String): Call<List<User>>

Repository实现 #

override suspend fun getUsersList(pageNo: String , perPageNo: String,
                                  usersLiveData: MutableLiveData<List<User>?>) = withContext(ioDispatcher) {

    val call = retrofitUserApiInstance.getUsersList(pageNo, perPageNo)

    call.enqueue(object : Callback<List<User>> {
        override fun onFailure(call: Call<List<User>>, t: Throwable) {
            usersLiveData.postValue(null)
        }

        override fun onResponse(call: Call<List<User>>, response: Response<List<User>>) {
            if (response.isSuccessful) {
                usersLiveData.postValue(response.body())
            } else {
                usersLiveData.postValue(null)
            }
        }
    })
}

内容的提问来源于stack exchange，提问作者DevPeter