Subject Verb Agreement With Percentages

The verb in both sentences is correct depending on whether you are writing about an event in the present or in the past. (The importance of „in business“ is complicated and ambiguous.) In a sentence, the verb must correspond to the subject in number. If the subject is singular, the verb must be singular. If the subject is plural, the verb must be plural. For example: according to the construction „x percent of y“, the verb is singular, if y is a singular noun or a collective noun, and the verb is plural, if y is a plural singular. Our English language is evolving, whether we like it or why we don`t. We follow the rule of the Chicago Manual of Style which says: „If the subject is a collective subject that conveys the idea of unity or multitude, the verb is singular {the nation is powerful`.