219.59% is the change from 97 to 310
Calculation steps:
[( 310 - 97 ) ÷ 97] x 100 = 219.59%
Formula
Percentage change = [(310 - 97) / 97] x 100
Subtract the new number by the original number
310 - 97 = 213
213 ÷ 97 = 2.195876288659794
2.195876288659794 x 100 = 219.59%