69.59% is the change from 342 to 580
Calculation steps:
[( 580 - 342 ) ÷ 342] x 100 = 69.59%
Formula
Percentage change = [(580 - 342) / 342] x 100
Subtract the new number by the original number
580 - 342 = 238
238 ÷ 342 = 0.695906432748538
0.695906432748538 x 100 = 69.59%