In this diagram, there are a total of 20 squares, and 9 of them are shaded. This means that 9/20 of them are shaded, and to find what percent this is, divide 9 by 20 and multiply what you get by 100.
9 divided by 20 =0.45
0.45 x 100 = 45%.
45% is your final answer!
I hope this helps and have a great rest of your day!