-50.77% is the change from 912 to 449
Calculation steps:
[( 449 - 912 ) ÷ 912] x 100 = -50.77%
Formula
Percentage change = [(449 - 912) / 912] x 100
Subtract the new number by the original number
449 - 912 = -463
-463 ÷ 912 = -0.5076754385964912
-0.5076754385964912 x 100 = -50.77%