10% is the change from 80 to 88
Calculation steps:
[( 88 - 80 ) ÷ 80] x 100 = 10%
Formula
Percentage change = [(88 - 80) / 80] x 100
Subtract the new number by the original number
88 - 80 = 8
8 ÷ 80 = 0.1
0.1 x 100 = 10%
Example