There are nine different types of bacteria on the Petri dish.

A drawing shows some colonies of bacteria on the Petri dish. The number of bacteria in different colonies is as follows: Colony 1, 2 bacteria; colony 2, 1 bacteria; colony 3, 7 bacteria; colony 4, 4 bacteria; colony 5, 1 bacteria; colony 6, 1 bacteria; colony 7, 1 bacteria; colony 8, 1 bacteria; colony 9, 1 bacteria.

What percent of the bacteria on the Petri dish is of type 3?

%