9962.5% is the change from 8 to 805
Calculation steps:
[( 805 - 8 ) ÷ 8] x 100 = 9962.5%
Formula
Percentage change = [(805 - 8) / 8] x 100
Subtract the new number by the original number
805 - 8 = 797
797 ÷ 8 = 99.625
99.625 x 100 = 9962.5%
Example