-4.11% is the change from 657 to 630
Calculation steps:
[( 630 - 657 ) ÷ 657] x 100 = -4.11%
Formula
Percentage change = [(630 - 657) / 657] x 100
Subtract the new number by the original number
630 - 657 = -27
-27 ÷ 657 = -0.0410958904109589
-0.0410958904109589 x 100 = -4.11%