81.34% is the change from 343 to 622
Calculation steps:
[( 622 - 343 ) ÷ 343] x 100 = 81.34%
Formula
Percentage change = [(622 - 343) / 343] x 100
Subtract the new number by the original number
622 - 343 = 279
279 ÷ 343 = 0.8134110787172012
0.8134110787172012 x 100 = 81.34%