Percentage Decrease Chart and Reference Table
Look up the result of any common percentage decrease without doing the math. Bases run from 10 to 10,000; rates run from 1% to 90%.
Formula: Percent Decrease = ((Original − New) ÷ Original) × 100
Reference Table
| Base | −1% | −2% | −3% | −4% | −5% | −10% | −15% | −20% | −25% | −30% | −40% | −50% | −60% | −75% | −90% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 9.9 | 9.8 | 9.7 | 9.6 | 9.5 | 9 | 8.5 | 8 | 7.5 | 7 | 6 | 5 | 4 | 2.5 | 1 |
| 25 | 24.75 | 24.5 | 24.25 | 24 | 23.75 | 22.5 | 21.25 | 20 | 18.75 | 17.5 | 15 | 12.5 | 10 | 6.25 | 2.5 |
| 50 | 49.5 | 49 | 48.5 | 48 | 47.5 | 45 | 42.5 | 40 | 37.5 | 35 | 30 | 25 | 20 | 12.5 | 5 |
| 100 | 99 | 98 | 97 | 96 | 95 | 90 | 85 | 80 | 75 | 70 | 60 | 50 | 40 | 25 | 10 |
| 200 | 198 | 196 | 194 | 192 | 190 | 180 | 170 | 160 | 150 | 140 | 120 | 100 | 80 | 50 | 20 |
| 500 | 495 | 490 | 485 | 480 | 475 | 450 | 425 | 400 | 375 | 350 | 300 | 250 | 200 | 125 | 50 |
| 1,000 | 990 | 980 | 970 | 960 | 950 | 900 | 850 | 800 | 750 | 700 | 600 | 500 | 400 | 250 | 100 |
| 5,000 | 4,950 | 4,900 | 4,850 | 4,800 | 4,750 | 4,500 | 4,250 | 4,000 | 3,750 | 3,500 | 3,000 | 2,500 | 2,000 | 1,250 | 500 |
| 10,000 | 9,900 | 9,800 | 9,700 | 9,600 | 9,500 | 9,000 | 8,500 | 8,000 | 7,500 | 7,000 | 6,000 | 5,000 | 4,000 | 2,500 | 1,000 |
How to Read This Chart
Pick the base value from the leftmost column and the decrease percentage from the top row. The cell at the intersection is the new value after that decrease. For a 25% decrease on 200, find the 200 row, the 25% column, and read 150. Every figure in the table comes from the same percentage decrease formula used across this site: multiply the base by one minus the rate, expressed as a decimal.
The chart is meant to replace repetitive arithmetic, not to teach the formula itself; the formula page covers the derivation and the worked examples page shows the arithmetic step by step for anyone who wants to see the full working.
Most Common Percentage Decreases Explained
A 10% decrease is the typical "round" discount in pricing, easy to estimate mentally by moving a decimal point. A 20% decrease is the standard "20% off" promotion seen in most retail sales. A 25% decrease maps to a quarter-off sale, leaving three-quarters of the original value. A 50% decrease cuts the value exactly in half. 75% and 90% decreases appear in clearance and inventory liquidation, where a store needs to move stock quickly at the end of a season.
Reading across a row shows how the same base value shrinks as the rate climbs. Reading down a column shows how the same percentage decrease scales across bases of different sizes. Both views use identical math; the table just saves the multiplication.
Percentage Decrease Multipliers Table
| Decrease | Multiplier |
|---|---|
| 1% | 0.99 |
| 2% | 0.98 |
| 3% | 0.97 |
| 4% | 0.96 |
| 5% | 0.95 |
| 10% | 0.90 |
| 15% | 0.85 |
| 20% | 0.80 |
| 25% | 0.75 |
| 30% | 0.70 |
| 40% | 0.60 |
| 50% | 0.50 |
| 60% | 0.40 |
| 75% | 0.25 |
| 90% | 0.10 |
Frequently Asked Questions
How do I read this chart?
Find the base value in the leftmost column, then the decrease percentage in the top row. The cell shows the new value after that percentage decrease.
Why use a reference chart?
Quick lookup. For common percentages and round base values, the chart skips arithmetic.
What is a multiplier?
The single factor that produces the new value in one step. For a 20% decrease the multiplier is 0.80.
Can I print this chart?
Yes. The table prints cleanly in landscape orientation on standard paper sizes.
What is the most common discount percentage?
10%, 20%, and 25% are by far the most common retail markdowns.
Does the chart work for any base?
Scale the closest base by a power of ten; the percentages stay the same regardless of scale.
How do I extend the chart to other percentages?
Multiply the base by (1 − Rate/100) for any rate not shown in the table.
Is there a percentage increase version?
Yes. Multiply by (1 + Rate/100) instead of (1 − Rate/100) to get a percentage increase table.
Why do the rows stop at 10,000?
The table is built for quick lookup of everyday amounts. For a larger base, scale a row up by the same power of ten and the percentages still apply exactly.