9.68% is the change from 620 to 680
Calculation steps:
[( 680 - 620 ) ÷ 620] x 100 = 9.68%
Formula
Percentage change = [(680 - 620) / 620] x 100
Subtract the new number by the original number
680 - 620 = 60
60 ÷ 620 = 0.0967741935483871
0.0967741935483871 x 100 = 9.68%