343.59% is the change from 78 to 346
Calculation steps:
[( 346 - 78 ) ÷ 78] x 100 = 343.59%
Formula
Percentage change = [(346 - 78) / 78] x 100
Subtract the new number by the original number
346 - 78 = 268
268 ÷ 78 = 3.4358974358974357
3.4358974358974357 x 100 = 343.59%