The question is an illustration of percentage change, and the new amount is £199.95
How to decrease the amount?
The amount is given as:
Amount = £645
The rate is given as:
Rate = 69%
When decreased, the new amount is:
New = Amount * (1 - Rate)
So, we have:
New = £645 * (1 - 69%)
Evaluate
New = £199.95
Hence, the new amount is £199.95
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