253.61% is the change from 97 to 343
Calculation steps:
[( 343 - 97 ) ÷ 97] x 100 = 253.61%
Formula
Percentage change = [(343 - 97) / 97] x 100
Subtract the new number by the original number
343 - 97 = 246
246 ÷ 97 = 2.536082474226804
2.536082474226804 x 100 = 253.61%