338.46% is the change from 78 to 342
Calculation steps:
[( 342 - 78 ) ÷ 78] x 100 = 338.46%
Formula
Percentage change = [(342 - 78) / 78] x 100
Subtract the new number by the original number
342 - 78 = 264
264 ÷ 78 = 3.3846153846153846
3.3846153846153846 x 100 = 338.46%