-45.6% is the change from 829 to 451
Calculation steps:
[( 451 - 829 ) ÷ 829] x 100 = -45.6%
Formula
Percentage change = [(451 - 829) / 829] x 100
Subtract the new number by the original number
451 - 829 = -378
-378 ÷ 829 = -0.4559710494571773
-0.4559710494571773 x 100 = -45.6%