-31.98% is the change from 663 to 451
Calculation steps:
[( 451 - 663 ) ÷ 663] x 100 = -31.98%
Formula
Percentage change = [(451 - 663) / 663] x 100
Subtract the new number by the original number
451 - 663 = -212
-212 ÷ 663 = -0.31975867269984914
-0.31975867269984914 x 100 = -31.98%