60% of 90 = % of 45

Sure, let's solve this step by step:

1. First, calculate 60% of 90. You can do this by multiplying 90 by 0.60 (which is the decimal equivalent of 60%).

   90 * 0.60 = 54

2. Now, you want to find out what percentage of 45 is 54. You can do this by dividing 54 by 45 and then multiplying the result by 100 to get the percentage.

   (54 / 45) * 100 = 120

So, 60% of 90 is equal to 120% of 45.