-50.82% is the change from 917 to 451
Calculation steps:
[( 451 - 917 ) ÷ 917] x 100 = -50.82%
Formula
Percentage change = [(451 - 917) / 917] x 100
Subtract the new number by the original number
451 - 917 = -466
-466 ÷ 917 = -0.5081788440567067
-0.5081788440567067 x 100 = -50.82%