39.29% is the change from 397 to 553
Calculation steps:
[( 553 - 397 ) ÷ 397] x 100 = 39.29%
Formula
Percentage change = [(553 - 397) / 397] x 100
Subtract the new number by the original number
553 - 397 = 156
156 ÷ 397 = 0.3929471032745592
0.3929471032745592 x 100 = 39.29%