-45.47% is the change from 827 to 451
Calculation steps:
[( 451 - 827 ) ÷ 827] x 100 = -45.47%
Formula
Percentage change = [(451 - 827) / 827] x 100
Subtract the new number by the original number
451 - 827 = -376
-376 ÷ 827 = -0.4546553808948005
-0.4546553808948005 x 100 = -45.47%