Calculate Percentage Change Between Two Values
Quickly determine the exact percentage change — increase or decrease — between any two numbers. Essential for tracking grade improvements, financial growth, and data trends.
Quickly determine the exact percentage change — increase or decrease — between any two numbers. Essential for tracking grade improvements, financial growth, and data trends.
Subjects
Subject Breakdown
A negative result means the value decreased. A positive means it increased.
The "Old" value is always your reference. Swapping old and new gives a different answer.
Use this to measure how much your score improved from one test to the next.
A percentage change can exceed 100% — going from 5 to 15 is a 200% increase.
Enter the original (old) value — for example, your previous exam score.
Enter the new value — for example, your latest exam score.
The calculator instantly shows the percentage change and whether it is an increase or decrease.
Percent Change = ((New − Old) / |Old|) × 100Subtract the old value from the new value, then divide the result by the absolute value of the old value, and multiply by 100. A positive result indicates an increase; a negative result indicates a decrease.
Percentage change is one of the most useful mathematical concepts for everyday life. Whether comparing test scores, salary figures, or stock prices, the formula is always: divide the difference by the original value and multiply by 100.
Exam score improved from 65 to 80:
A positive result \u2014 the score improved by 23.1%.
Percentage change measures how much a value has changed relative to its original amount, expressed as a percentage. It shows the direction (increase or decrease) and the magnitude of the change.
Percentage change compares a new value to an old baseline (time-based). Percentage difference compares two values of the same type with no defined starting point, using their average as the base.
Yes. If the new value is less than the old value, the result will be negative, indicating a percentage decrease.