The Quran states categorically that the worshipprs of God alone will be in minority and gives numerous examples.
[12:103-106] MOST people, no matter what you do, will not believe. You are not asking them for any money; you simply deliver this reminder for all the people. So many proofs in the heavens and the earth are given to them, but they pass by them, heedlessly!
The MAJORITY of those who believe in GOD do not do so without committing idol worship.
ONLY TWO BELIEVERS BESIDES MOSES/AARON LEFT after witnessing so many miracles.
[5:20-26] Recall that Moses said to his people, "O my people, remember GOD's blessings upon you: He appointed prophets from among you, made you kings, and granted you what He never granted any other people. "O my people, enter the holy land that GOD has decreed for you, and do not rebel, lest you become losers." They said, "O Moses, there are powerful people in it, and we will not enter it, unless they get out of it. If they get out, we are entering." TWO men who were reverent and blessed by GOD said, "Just enter the gate. If you just enter it, you will surely prevail. You must trust in GOD, if you are believers." They said, "O Moses, we will never enter it, so long as they are in it. Therefore, go - you and your Lord - and fight. We are sitting right here." He said, "My Lord, I can only control myself and my brother. So, allow us to part company with the WICKED people." He said, "Henceforth, it is forbidden them for forty years, during which they will roam the earth aimlessly. Do not grieve over such wicked people."
JESUS HAD ONLY A FEW DISCIPLES
[3:52] When Jesus sensed their disbelief, he said, "Who are my supporters towards GOD?" The disciples said, "We are GOD's supporters; we believe in GOD, and bear witness that we are submitters."
PEOPLE OF LOT - ONLY ONE HOUSE OF BELIEVERS
[51:32-36] They said, "We have been dispatched to criminal people. "We will shower them with rocks of clay. "Marked by your Lord for the transgressors." We then delivered all the believers. We did not find in it except one house of submitters.
SATAN TO CLAIM MAJORITY OF HUMANS
[17:62] He said, "Since You have honored him over me, if You respite me till the Day of Resurrection, I will possess ALL HIS DESCENDANTS, EXCEPT A FEW."
MAJORITY OF BELIEVERS ARE IDOL WORSHIPERS
[12:106] The majority of those who believe in God do not do so without committing idol worship.
MAJORITY OF HUMANS ARE DISBELIEVERS
[12:103] Most people, no matter what you do, will not believe.
MAJORITY OF MUSLIMS HAVE DESERTED THE QURAN
[25:30] The messenger said, "My Lord, my people have deserted this Quran."