9.84% is the change from 610 to 670
Calculation steps:
[( 670 - 610 ) ÷ 610] x 100 = 9.84%
Formula
Percentage change = [(670 - 610) / 610] x 100
Subtract the new number by the original number
670 - 610 = 60
60 ÷ 610 = 0.09836065573770492
0.09836065573770492 x 100 = 9.84%