-6.55% is the change from 397 to 371
Calculation steps:
[( 371 - 397 ) ÷ 397] x 100 = -6.55%
Formula
Percentage change = [(371 - 397) / 397] x 100
Subtract the new number by the original number
371 - 397 = -26
-26 ÷ 397 = -0.0654911838790932
-0.0654911838790932 x 100 = -6.55%