Measure a fall relative to the starting value.
| Input | What it means |
|---|---|
| Initial value | The starting value, used as the baseline when a change is calculated. |
| Final Value | The later or ending value being compared with the starting value. |
A fall from 100 to 80 is 20/100 × 100 = 20%.
Describe a reduction relative to the original amount.
Keep the original input precision through the calculation and round the final answer to the precision you need. Rounding an intermediate result can change later steps.
Check the operation, units, signs and rounding first. Equivalent fractions or expressions can look different while representing the same value.
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