-2.87% is the change from 627 to 609
Calculation steps:
[( 609 - 627 ) ÷ 627] x 100 = -2.87%
Formula
Percentage change = [(609 - 627) / 627] x 100
Subtract the new number by the original number
609 - 627 = -18
-18 ÷ 627 = -0.028708133971291867
-0.028708133971291867 x 100 = -2.87%