103.25% is the change from 338 to 687
Calculation steps:
[( 687 - 338 ) ÷ 338] x 100 = 103.25%
Formula
Percentage change = [(687 - 338) / 338] x 100
Subtract the new number by the original number
687 - 338 = 349
349 ÷ 338 = 1.032544378698225
1.032544378698225 x 100 = 103.25%