8300% is the change from 8 to 672
Calculation steps:
[( 672 - 8 ) ÷ 8] x 100 = 8300%
Formula
Percentage change = [(672 - 8) / 8] x 100
Subtract the new number by the original number
672 - 8 = 664
664 ÷ 8 = 83
83 x 100 = 8300%
Example