102.06% is the change from 340 to 687
Calculation steps:
[( 687 - 340 ) ÷ 340] x 100 = 102.06%
Formula
Percentage change = [(687 - 340) / 340] x 100
Subtract the new number by the original number
687 - 340 = 347
347 ÷ 340 = 1.0205882352941176
1.0205882352941176 x 100 = 102.06%