Percentage Increase/Decrease Calculator
Calculate percentage changes between values or apply percentage increases and decreases.
Calculator Mode
Results
Percentage Increase
+25.00%
Absolute Change
+25
Multiplier
×1.2500
Formulas
Percentage Change
((New - Old) / Old) × 100
Percentage Increase
Value × (1 + %/100)
Percentage Decrease
Value × (1 - %/100)
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
📚
Formula Source: Handbook of Mathematical Functions
by Abramowitz & Stegun
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.