-54.79% is the change from 438 to 198
Calculation steps:
[( 198 - 438 ) ÷ 438] x 100 = -54.79%
Formula
Percentage change = [(198 - 438) / 438] x 100
Subtract the new number by the original number
198 - 438 = -240
-240 ÷ 438 = -0.547945205479452
-0.547945205479452 x 100 = -54.79%