52.9% is the change from 397 to 607
Calculation steps:
[( 607 - 397 ) ÷ 397] x 100 = 52.9%
Formula
Percentage change = [(607 - 397) / 397] x 100
Subtract the new number by the original number
607 - 397 = 210
210 ÷ 397 = 0.5289672544080605
0.5289672544080605 x 100 = 52.9%