Create a vivid scene of a large outdoor music concert. The concert is in full swing with a live band playing on stage, and a crowd of 3500 people enjoying the music. The crowd is diverse with men, women, and around 800 children scattered throughout. The women in the audience noticeably outnumber the men - with there being 1300 more women than men. There are various food stalls, temporary restroom facilities, and security personnel ensuring a safe and enjoyable event. Bear in mind not to include any text in the image.

There were 3500 people at a concert and 800 of them were children. There were 1300 more woman than men. Whar percentage of the people at the concert were men?

To find the number of men at the concert, we subtract the number of children and women from the total number of people:

3500 - 800 = 2700 (number of adults)
Let's say the number of men is x. We know that the number of women is x + 1300.

The total number of people at the concert is the sum of the number of men, women, and children:

x + (x + 1300) + 800 = 3500
2x + 2100 = 3500
2x = 1400
x = 700

So, there were 700 men at the concert.

To find the percentage of men at the concert, we divide the number of men by the total number of people and multiply by 100:

(700 / 3500) * 100 = 20%

Therefore, the percentage of people at the concert who were men is 20%.