157.14% is the change from 91 to 234
Calculation steps:
[( 234 - 91 ) ÷ 91] x 100 = 157.14%
Formula
Percentage change = [(234 - 91) / 91] x 100
Subtract the new number by the original number
234 - 91 = 143
143 ÷ 91 = 1.5714285714285714
1.5714285714285714 x 100 = 157.14%