2.09% is the change from 623 to 636
Calculation steps:
[( 636 - 623 ) ÷ 623] x 100 = 2.09%
Formula
Percentage change = [(636 - 623) / 623] x 100
Subtract the new number by the original number
636 - 623 = 13
13 ÷ 623 = 0.02086677367576244
0.02086677367576244 x 100 = 2.09%