Percentage Change Calculator

Calculate percentage change from old value to new value:

 
 
%
 
 

Percentage calculator ►

New value calculator

Calculate new value from old value and percentage change:

 
%
 
 
 

Percentage calculator ►

Percentage change calculation

The percentage change from old value (Vold) to new value (Vnew) is equal to the old and new values difference divided by the old value times 100%:

percentage change =
ΔVVold

percentage change =
(Vnew - Vold)Vold
× 100%

Example #1

Price percentage increase from old price of $1000 to new price of $1200 is caluclated by:

percentage change =
($1200 - $1000)$1000
× 100%

 = 0.2 × 100% = 20%

Example #2

Price percentage decrease from old price of $1000 to new price of $900 is caluclated by:

percentage change =
($900 - $1000)$1000
× 100%

 = -0.1 × 100% = -10%

Difference and new value calculation

The difference d is equal to the old value Vold times the percentage change p divided by 100:

d = Vold ×
p100

The new value Vnew is equal to the old value Vold plus the difference d:

Vnew = Vold + d

 

Percentage calculator ►

 


See also

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