-46.63% is the change from 845 to 451
Calculation steps:
[( 451 - 845 ) ÷ 845] x 100 = -46.63%
Formula
Percentage change = [(451 - 845) / 845] x 100
Subtract the new number by the original number
451 - 845 = -394
-394 ÷ 845 = -0.4662721893491124
-0.4662721893491124 x 100 = -46.63%