114.38% is the change from 320 to 686
Calculation steps:
[( 686 - 320 ) ÷ 320] x 100 = 114.38%
Formula
Percentage change = [(686 - 320) / 320] x 100
Subtract the new number by the original number
686 - 320 = 366
366 ÷ 320 = 1.14375
1.14375 x 100 = 114.38%