A man's salary increased by 10% and then again by 10%. Due to corrections made by the company, his salary was decreased by 20% . By what percent did his salary increase or decrease overall?
315% decrease
Let the original salary be ₹ 100.
Salary after first increase of 10%
=100+10100 × 100
= ₹110
Salary after second increase of 10%
=110+10100 × 110
= ₹121
Salary after a decrease of 20%
=(121−20100) × 121
= ₹ (121 - 24.20)
= ₹96.80
∴ Decrease in salary = 100 - 96.80 = ₹ 3.20
∴ Overall decrease in salary
=3.2100
=3.2%
=315%