7.5% is the change from 80 to 86
Calculation steps:
[( 86 - 80 ) ÷ 80] x 100 = 7.5%
Formula
Percentage change = [(86 - 80) / 80] x 100
Subtract the new number by the original number
86 - 80 = 6
6 ÷ 80 = 0.075
0.075 x 100 = 7.5%
Example