-2.25% is the change from 623 to 609
Calculation steps:
[( 609 - 623 ) ÷ 623] x 100 = -2.25%
Formula
Percentage change = [(609 - 623) / 623] x 100
Subtract the new number by the original number
609 - 623 = -14
-14 ÷ 623 = -0.02247191011235955
-0.02247191011235955 x 100 = -2.25%