-30.76% is the change from 647 to 448
Calculation steps:
[( 448 - 647 ) ÷ 647] x 100 = -30.76%
Formula
Percentage change = [(448 - 647) / 647] x 100
Subtract the new number by the original number
448 - 647 = -199
-199 ÷ 647 = -0.3075734157650695
-0.3075734157650695 x 100 = -30.76%