564.23% is the change from 123 to 817
Calculation steps:
[( 817 - 123 ) ÷ 123] x 100 = 564.23%
Formula
Percentage change = [(817 - 123) / 123] x 100
Subtract the new number by the original number
817 - 123 = 694
694 ÷ 123 = 5.642276422764228
5.642276422764228 x 100 = 564.23%