105.29% is the change from 397 to 815
Calculation steps:
[( 815 - 397 ) ÷ 397] x 100 = 105.29%
Formula
Percentage change = [(815 - 397) / 397] x 100
Subtract the new number by the original number
815 - 397 = 418
418 ÷ 397 = 1.0528967254408061
1.0528967254408061 x 100 = 105.29%