1% = 1/100 which cannot be reduced.
20% = 20/100 = 1/5
250% is written (in reduced form) as: 2 1/2
It is 4/100 which can be simplified if required.
The reduced fraction to equal 10 percent is 1/10
1/100
100% = 1/1
1/2.
1/25
1
1/25
1% = 1/100 in fraction
1/20