Welcome to Android Central! What do you mean 96%? You're at 96% of your total monthly data allotment?
Be aware of all apps that may be syncing data in the background, which can use up a decent amount of data. Go to as many apps as you can and check their settings--look for ways to adjust the syncing interval, or options to sync only on wi-fi. Make sure Google Play Store isn't automatically updating apps over mobile data. Use the Restrict Background Data feature in Settings>Data Usage, or better yet, toggle off your mobile data when you don't actively need it.