-40.3% is the change from 397 to 237
Calculation steps:
[( 237 - 397 ) ÷ 397] x 100 = -40.3%
Formula
Percentage change = [(237 - 397) / 397] x 100
Subtract the new number by the original number
237 - 397 = -160
-160 ÷ 397 = -0.40302267002518893
-0.40302267002518893 x 100 = -40.3%