562.6% is the change from 123 to 815
Calculation steps:
[( 815 - 123 ) ÷ 123] x 100 = 562.6%
Formula
Percentage change = [(815 - 123) / 123] x 100
Subtract the new number by the original number
815 - 123 = 692
692 ÷ 123 = 5.626016260162602
5.626016260162602 x 100 = 562.6%