82.46% is the change from 342 to 624
Calculation steps:
[( 624 - 342 ) ÷ 342] x 100 = 82.46%
Formula
Percentage change = [(624 - 342) / 342] x 100
Subtract the new number by the original number
624 - 342 = 282
282 ÷ 342 = 0.8245614035087719
0.8245614035087719 x 100 = 82.46%