101.47% is the change from 340 to 685
Calculation steps:
[( 685 - 340 ) ÷ 340] x 100 = 101.47%
Formula
Percentage change = [(685 - 340) / 340] x 100
Subtract the new number by the original number
685 - 340 = 345
345 ÷ 340 = 1.0147058823529411
1.0147058823529411 x 100 = 101.47%