-4.57% is the change from 657 to 627
Calculation steps:
[( 627 - 657 ) ÷ 657] x 100 = -4.57%
Formula
Percentage change = [(627 - 657) / 657] x 100
Subtract the new number by the original number
627 - 657 = -30
-30 ÷ 657 = -0.045662100456621
-0.045662100456621 x 100 = -4.57%