Percentage

30%

30% is 0.3 as a decimal and 3/10 as a fraction. 30% of 100 is 30, and increasing a value by 30% means multiplying it by 1.3.

What this percentage means

As a decimal0.3

As a fraction3/10

Per mille300 ‰

Basis points3,000 bp

Ratio3 : 7part to remainder

of 103

of 206

of 5015

of 10030

of 25075

of 500150

of 1,000300

of 10,0003,000

Increase 100 by 30%130

Decrease 100 by 30%70

Multiplier for an increase× 1.3

Multiplier for a decrease× 0.7

Reverse an increase÷ 1.3 (that is × 0.76923077)adding then removing the same percentage does not return the original

Percentage that reverses a 30% rise23.076923%

Compounded over 10 periods× 13.78584918a 30% change applied ten times

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