-53.66% is the change from 451 to 209
Calculation steps:
[( 209 - 451 ) ÷ 451] x 100 = -53.66%
Formula
Percentage change = [(209 - 451) / 451] x 100
Subtract the new number by the original number
209 - 451 = -242
-242 ÷ 451 = -0.5365853658536586
-0.5365853658536586 x 100 = -53.66%