-37.92% is the change from 451 to 280
Calculation steps:
[( 280 - 451 ) ÷ 451] x 100 = -37.92%
Formula
Percentage change = [(280 - 451) / 451] x 100
Subtract the new number by the original number
280 - 451 = -171
-171 ÷ 451 = -0.37915742793791574
-0.37915742793791574 x 100 = -37.92%