-28.41% is the change from 630 to 451
Calculation steps:
[( 451 - 630 ) ÷ 630] x 100 = -28.41%
Formula
Percentage change = [(451 - 630) / 630] x 100
Subtract the new number by the original number
451 - 630 = -179
-179 ÷ 630 = -0.2841269841269841
-0.2841269841269841 x 100 = -28.41%