-9.36% is the change from 438 to 397
Calculation steps:
[( 397 - 438 ) ÷ 438] x 100 = -9.36%
Formula
Percentage change = [(397 - 438) / 438] x 100
Subtract the new number by the original number
397 - 438 = -41
-41 ÷ 438 = -0.09360730593607305
-0.09360730593607305 x 100 = -9.36%