-37.03% is the change from 397 to 250
Calculation steps:
[( 250 - 397 ) ÷ 397] x 100 = -37.03%
Formula
Percentage change = [(250 - 397) / 397] x 100
Subtract the new number by the original number
250 - 397 = -147
-147 ÷ 397 = -0.3702770780856423
-0.3702770780856423 x 100 = -37.03%