257.29% is the change from 96 to 343
Calculation steps:
[( 343 - 96 ) ÷ 96] x 100 = 257.29%
Formula
Percentage change = [(343 - 96) / 96] x 100
Subtract the new number by the original number
343 - 96 = 247
247 ÷ 96 = 2.5729166666666665
2.5729166666666665 x 100 = 257.29%