7.7% is the change from 636 to 685
Calculation steps:
[( 685 - 636 ) ÷ 636] x 100 = 7.7%
Formula
Percentage change = [(685 - 636) / 636] x 100
Subtract the new number by the original number
685 - 636 = 49
49 ÷ 636 = 0.0770440251572327
0.0770440251572327 x 100 = 7.7%