-3.13% is the change from 672 to 651
Calculation steps:
[( 651 - 672 ) ÷ 672] x 100 = -3.13%
Formula
Percentage change = [(651 - 672) / 672] x 100
Subtract the new number by the original number
651 - 672 = -21
-21 ÷ 672 = -0.03125
-0.03125 x 100 = -3.13%