What is the percentage of love marriage in world?

No one knows for sure. there are probably fewer "true love" weddings but many people fall into what they think is love and get married. so, i'd say that most people get married for love of the other person but there are the unfortunate coinsidences of marriage out of spite, greed, and hate. there are also arranged marriages in which the couple learn to love eachother for the sake of the marriage.