To find what percent 45 is of 90, you can use the formula:
Percentage = (Part / Whole) × 100
In this case, the ‘Part’ is 45 and the ‘Whole’ is 90. Plugging in these values:
Percentage = (45 / 90) × 100
Now, calculate 45 divided by 90, which is 0.5. Then multiply by 100:
Percentage = 0.5 × 100 = 50%
Therefore, 45 is 50 percent of 90.