86.4% is the change from 397 to 740
Calculation steps:
[( 740 - 397 ) ÷ 397] x 100 = 86.4%
Formula
Percentage change = [(740 - 397) / 397] x 100
Subtract the new number by the original number
740 - 397 = 343
343 ÷ 397 = 0.8639798488664987
0.8639798488664987 x 100 = 86.4%