1
Calculate Percent Change
Free
A1 holds last year's value, B1 holds this year's value. Write a formula in C1 for the percent change from A1 to B1.
Show the solution
Use =(B1-A1)/A1.
Right — (new - old) / old gives the percent change as a decimal (multiply by 100 to see it as a percentage).
Expected result in C1: 0.25
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2
Calculate What Percent One Value Is of Another
Free
A1 holds a part, B1 holds a whole. Write a formula in C1 for what percent A1 is of B1.
Show the solution
Use =A1/B1.
Good — dividing part by whole gives the percentage as a decimal.
Expected result in C1: 0.25
Try it in the live spreadsheet →
3
Calculate a Percent Decrease
Free
A1 holds an original price, B1 holds a sale price. Write a formula in C1 for the percent decrease from A1 to B1.
Show the solution
Use =(A1-B1)/A1.
Right — this gives the size of the drop as a percentage of the original value.
Expected result in C1: 0.25
Try it in the live spreadsheet →
4
Add a Percentage Increase to a Base Value
A1 holds a base salary, B1 holds a raise percentage as a decimal. Write a formula in C1 for the new salary after the raise.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →
5
Subtract a Percentage Discount From a Price
A1 holds a price, B1 holds a discount rate as a decimal. Write a formula in C1 for the discounted price.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →
6
Calculate Percent of Total Budget Spent
A1 holds amount spent, B1 holds total budget. Write a formula in C1 for what percent of budget has been spent.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →
7
Calculate Year-Over-Year Growth
A1 holds last year's revenue, B1 holds this year's. Write a formula in C1 for the year-over-year percent growth.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →
8
Calculate a Tip Amount From a Percentage
A1 holds a bill total, B1 holds a tip rate as a decimal. Write a formula in C1 for the tip amount.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →
9
Calculate the Percentage Point Gap Between Two Rates
A1 and B1 hold two rates as decimals. Write a formula in C1 for the difference between them.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →
10
Calculate the New Total After a Percent Increase
A1 holds a current headcount, B1 holds a planned percent increase as a decimal. Write a formula in C1 for the new headcount.
Solution and instant grading: open it in the practice app (use one of your 20 free picks, or Pro).
Try it in the live spreadsheet →