-37.53% is the change from 397 to 248
Calculation steps:
[( 248 - 397 ) ÷ 397] x 100 = -37.53%
Formula
Percentage change = [(248 - 397) / 397] x 100
Subtract the new number by the original number
248 - 397 = -149
-149 ÷ 397 = -0.37531486146095716
-0.37531486146095716 x 100 = -37.53%