573.55% is the change from 121 to 815
Calculation steps:
[( 815 - 121 ) ÷ 121] x 100 = 573.55%
Formula
Percentage change = [(815 - 121) / 121] x 100
Subtract the new number by the original number
815 - 121 = 694
694 ÷ 121 = 5.735537190082645
5.735537190082645 x 100 = 573.55%