138.14% is the change from 97 to 231
Calculation steps:
[( 231 - 97 ) ÷ 97] x 100 = 138.14%
Formula
Percentage change = [(231 - 97) / 97] x 100
Subtract the new number by the original number
231 - 97 = 134
134 ÷ 97 = 1.3814432989690721
1.3814432989690721 x 100 = 138.14%