Quick Answer
100 + 40 = 140
To find a percentage increase, first calculate the change amount, then add it to the original value.
Alternatively: 100 × (1 + 0.4) = 100 × 1.4 = 140.
Looking for the opposite? 40% decrease of 100
Our full percentage calculator handles any percentage, reverse calculations, and percentage change between two values.
Open Percentage Calculator →