18.56% is the change from 97 to 115
Calculation steps:
[( 115 - 97 ) ÷ 97] x 100 = 18.56%
Formula
Percentage change = [(115 - 97) / 97] x 100
Subtract the new number by the original number
115 - 97 = 18
18 ÷ 97 = 0.18556701030927836
0.18556701030927836 x 100 = 18.56%