82.56% is the change from 344 to 628
Calculation steps:
[( 628 - 344 ) ÷ 344] x 100 = 82.56%
Formula
Percentage change = [(628 - 344) / 344] x 100
Subtract the new number by the original number
628 - 344 = 284
284 ÷ 344 = 0.8255813953488372
0.8255813953488372 x 100 = 82.56%