Answer:
A 26.56% increase.
Step-by-step explanation:
A 12% increase corresponds to a total of 112% of the original amount.
Hence, a 13% increase of the 112% of the original amount would be equal to 1.12*1.13 = 1.2656, which equates to 126.56% of the original amount.
Hence, the single percentage change would be a 26.56% increase.
Hope this helped!
