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Answer:
The percentage is 26.6%
Step-by-step explanation:
Here, we want to
work
out the percentage change
To do this, we use the percentage change formula
This is,
percentage change = new value-old value)/old value * 100%
= (100-78.98)/78.98 * 100%
21.02/78.98 * 100% = 26.6%