82.16% is the change from 342 to 623
Calculation steps:
[( 623 - 342 ) ÷ 342] x 100 = 82.16%
Formula
Percentage change = [(623 - 342) / 342] x 100
Subtract the new number by the original number
623 - 342 = 281
281 ÷ 342 = 0.8216374269005848
0.8216374269005848 x 100 = 82.16%