7.69% is the change from 91 to 98
Calculation steps:
[( 98 - 91 ) ÷ 91] x 100 = 7.69%
Formula
Percentage change = [(98 - 91) / 91] x 100
Subtract the new number by the original number
98 - 91 = 7
7 ÷ 91 = 0.07692307692307693
0.07692307692307693 x 100 = 7.69%