8312.5% is the change from 8 to 673
Calculation steps:
[( 673 - 8 ) ÷ 8] x 100 = 8312.5%
Formula
Percentage change = [(673 - 8) / 8] x 100
Subtract the new number by the original number
673 - 8 = 665
665 ÷ 8 = 83.125
83.125 x 100 = 8312.5%
Example