2350% is the change from 28 to 686
Calculation steps:
[( 686 - 28 ) ÷ 28] x 100 = 2350%
Formula
Percentage change = [(686 - 28) / 28] x 100
Subtract the new number by the original number
686 - 28 = 658
658 ÷ 28 = 23.5
23.5 x 100 = 2350%
Example