This reverse percentage calculator can determine the original value before a percentage increase or decrease.
If the value has increased by a percentage:
Original Value = Final Value ÷ (1 + (Percentage ÷ 100))
If the value has decreased by a percentage:
Original Value = Final Value ÷ (1 - (Percentage ÷ 100))
An investment is now worth $23,000 after increased by 17%. Find the original invested amount.
Apply the values in the formula:
= 23,000 ÷ (1 + (17 ÷ 100))
= 23,000 ÷ (1 + 0.17)
= 23,000 ÷ 1.17
= $19,658
Find the original price of a product cost $150 after a 45% discount.
Apply the values in the formula:
= 150 ÷ (1 - (45 ÷ 100))
= 150 ÷ (1 - 0.45)
= 150 ÷ 0.55
= $272.73