How to convert Bytes to Percentage?

Question

Hi everyone today i'm trying to convert bytes received from update to percentage but no matter the method used i can't do it .

i make a constant codePushDownloadDidProgress were i convert the received bytes in to percentage multiplied by 100 than divided by total bytes but it gives me this result insteal a integer result:

.i tryed using math.floor but it doesn't work .i use code push for the update here is my code:

import React, {useEffect, useState} from 'react';
import Navigation from './navigation';
import codePush from 'react-native-code-push';
import LoaderBox from './components/LoaderBox';
import ProgressBox from './components/ProgressBox';

export default function App() {
  const [syncMessage, setSyncMessage] = useState(true);
  const [syncProgress, setSyncProgress] = useState(false);
  const [progress, setProgress] = useState(0);

  const codePushStatusDidChange = (status: any) => {
    switch (status) {
      case codePush.SyncStatus.CHECKING_FOR_UPDATE:
        setSyncMessage(true);
        break;

      case codePush.SyncStatus.DOWNLOADING_PACKAGE:
        console.log('Downloading package.');
        setSyncMessage(false);
        setSyncProgress(true);
        break;
      case codePush.SyncStatus.INSTALLING_UPDATE:
        console.log('Installing update.');
        setSyncProgress(true);
        setSyncMessage(false);
        break;
      case codePush.SyncStatus.UP_TO_DATE:
        console.log('Up-to-date.');
        setSyncMessage(false);
        break;
      case codePush.SyncStatus.UPDATE_INSTALLED:
        console.log('Update installed.');
        setSyncProgress(false);
        break;
    }
  };

  const codePushDownloadDidProgress = (progression: {
    receivedBytes: string;
    totalBytes: string;
  }) => {
    let progressReceived =
      (progression.receivedBytes * 100) / progression.totalBytes;
    setProgress(progressReceived);
  };

  const syncImmediate = () => {
    console.log('sincronized');
    codePush.sync(
      {
        checkFrequency: codePush.CheckFrequency.ON_APP_START,
        installMode: codePush.InstallMode.IMMEDIATE,
      },
      codePushStatusDidChange,
      codePushDownloadDidProgress,
    );
  };

  syncImmediate();

  return (
    <>
      {syncMessage && <LoaderBox />}
      {!syncMessage && !syncProgress && <Navigation />}
      {syncProgress && <ProgressBox prog={progress} />}
    </>
  );
}

App = codePush(App);

thank you in avance for your help