229.9% is the change from 97 to 320
Calculation steps:
[( 320 - 97 ) ÷ 97] x 100 = 229.9%
Formula
Percentage change = [(320 - 97) / 97] x 100
Subtract the new number by the original number
320 - 97 = 223
223 ÷ 97 = 2.2989690721649483
2.2989690721649483 x 100 = 229.9%