#### Solution for 21 is what percent of 129:

21:129*100 =

(21*100):129 =

2100:129 = 16.28

Now we have: 21 is what percent of 129 = 16.28

Question: 21 is what percent of 129?

Percentage solution with steps:

Step 1: We make the assumption that 129 is 100% since it is our output value.

Step 2: We next represent the value we seek with {x}.

Step 3: From step 1, it follows that {100\%}={129}.

Step 4: In the same vein, {x\%}={21}.

Step 5: This gives us a pair of simple equations:

{100\%}={129}(1).

{x\%}={21}(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

\frac{100\%}{x\%}=\frac{129}{21}

Step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x\%}{100\%}=\frac{21}{129}

\Rightarrow{x} = {16.28\%}

Therefore, {21} is {16.28\%} of {129}.

#### Solution for 129 is what percent of 21:

129:21*100 =

(129*100):21 =

12900:21 = 614.29

Now we have: 129 is what percent of 21 = 614.29

Question: 129 is what percent of 21?

Percentage solution with steps:

Step 1: We make the assumption that 21 is 100% since it is our output value.

Step 2: We next represent the value we seek with {x}.

Step 3: From step 1, it follows that {100\%}={21}.

Step 4: In the same vein, {x\%}={129}.

Step 5: This gives us a pair of simple equations:

{100\%}={21}(1).

{x\%}={129}(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

\frac{100\%}{x\%}=\frac{21}{129}

Step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x\%}{100\%}=\frac{129}{21}

\Rightarrow{x} = {614.29\%}

Therefore, {129} is {614.29\%} of {21}.

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