234.07% is the change from 91 to 304
Calculation steps:
[( 304 - 91 ) ÷ 91] x 100 = 234.07%
Formula
Percentage change = [(304 - 91) / 91] x 100
Subtract the new number by the original number
304 - 91 = 213
213 ÷ 91 = 2.340659340659341
2.340659340659341 x 100 = 234.07%