What you will practise
Growth uses the original amount as its denominator. A decimal result of 0.15 means 15%; reversing growth requires division by 1 plus the rate.
(new_value - original_value) / original_valueThe syntax above is a guide. Read the data and each task to choose the right arguments for your formula.
3 exercises in this lesson
- Exercise 1 · answer in E10
Calculate decimal growth from the previous sales in B6 to the current sales in C6.
- Exercise 2 · answer in E10
Calculate next period's sales when current sales C6 grow by the rate in D6.
- Exercise 3 · answer in E10
Calculate the original sales needed to reach C6 after growth at rate D6.
Before you check your answer
- Keep the source data intact. Write your answer in the highlighted result cell. Changing a source value changes the question instead of solving it.
- Use the requested cells. Check the first and last row of a range and read its column heading. A plausible total can still come from the wrong data.
- Reference values that can change. A fixed number may match today's sheet. A cell reference keeps the formula connected when the source values change.
How the answer is checked
The workbook evaluates your formula against the requested result. It also checks the skill being practised and tests the formula with changed source data, so a fixed answer that happens to match is not enough.
Use progressive hints when you need help, then try the task again with fresh data. Correctly solving a step opens the next exercise.
The workbook opens with this skill selected. Work through the exercises at your own pace.