217.53% is the change from 97 to 308
Calculation steps:
[( 308 - 97 ) ÷ 97] x 100 = 217.53%
Formula
Percentage change = [(308 - 97) / 97] x 100
Subtract the new number by the original number
308 - 97 = 211
211 ÷ 97 = 2.1752577319587627
2.1752577319587627 x 100 = 217.53%