99.13% is the change from 344 to 685
Calculation steps:
[( 685 - 344 ) ÷ 344] x 100 = 99.13%
Formula
Percentage change = [(685 - 344) / 344] x 100
Subtract the new number by the original number
685 - 344 = 341
341 ÷ 344 = 0.9912790697674418
0.9912790697674418 x 100 = 99.13%