Since percent means per hundred, you are basically asking how many is 21 per hundred of 450.
To calculate 21 of 450, we solve the the problem by using the following formula: (X*Y)/100 where X=21 and Y=450.
Thus, when we enter 21 and 450 into our formula, we get this:
(21*450)/100 = answer
First we multiplied 21 by 450 and then we divided that by 100. When we did this, we found the answer to be 94.5.
Therefore, 21 percent of 450 is 94.5.