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Why Is It Lovely
The general formula can be derived, that X% of Y is (X*Y)/100. But that's equal to (Y*X)/100, which is Y% of X, and there's your result.
But it's not made deliberately inaccessible, there are plenty of ways to "come up to speed", it's just that reading about maths won't give you the necessary background or understanding. I can't immediately explain to you why a particular Henry Moore statue is moving, or why I'm affected by a particular piece of abstract art - you need the experience, not the "understanding". Perhaps that's overly pessimistic, but actually, I'm full of optimism, because at least some of the thousands of people I come into contact with each year get enthused about things they hadn't previously realised were genuinely exciting.
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