815.07% is the change from 73 to 668
Calculation steps:
[( 668 - 73 ) ÷ 73] x 100 = 815.07%
Formula
Percentage change = [(668 - 73) / 73] x 100
Subtract the new number by the original number
668 - 73 = 595
595 ÷ 73 = 8.150684931506849
8.150684931506849 x 100 = 815.07%