70.53% is the change from 397 to 677
Calculation steps:
[( 677 - 397 ) ÷ 397] x 100 = 70.53%
Formula
Percentage change = [(677 - 397) / 397] x 100
Subtract the new number by the original number
677 - 397 = 280
280 ÷ 397 = 0.7052896725440806
0.7052896725440806 x 100 = 70.53%