-18.25% is the change from 548 to 448
Calculation steps:
[( 448 - 548 ) ÷ 548] x 100 = -18.25%
Formula
Percentage change = [(448 - 548) / 548] x 100
Subtract the new number by the original number
448 - 548 = -100
-100 ÷ 548 = -0.18248175182481752
-0.18248175182481752 x 100 = -18.25%