In written English, do you write fractional inequality with a percent-plus or a plus-percent?

Question

In written English, which of the following is the correct way to convey _I have a greater than or equal to ninety percent success rate according to all measures_? >1. I have 90%+ success rate across the board. >1. I have a 90+% success rate across the board.

Answer 1

Proper use of symbols depends on context to determine appropriate stylistic convention. This reads as a line from a resume, in which case I would recommend avoiding mathematical notation.

Fully written without symbols, it would read, "I have a ninety percent or greater success rate..."

Answer 2

_I have a greater than or equal to ninety percent success rate according to all measures_?

I have a ≥ 90% success rate according to all measures.