-56% is the change from 450 to 198
Calculation steps:
[( 198 - 450 ) ÷ 450] x 100 = -56%
Formula
Percentage change = [(198 - 450) / 450] x 100
Subtract the new number by the original number
198 - 450 = -252
-252 ÷ 450 = -0.56
-0.56 x 100 = -56%
Example