23.38% is the change from 680 to 839
Calculation steps:
[( 839 - 680 ) ÷ 680] x 100 = 23.38%
Formula
Percentage change = [(839 - 680) / 680] x 100
Subtract the new number by the original number
839 - 680 = 159
159 ÷ 680 = 0.2338235294117647
0.2338235294117647 x 100 = 23.38%