962.5% is the change from 8 to 85
Calculation steps:
[( 85 - 8 ) ÷ 8] x 100 = 962.5%
Formula
Percentage change = [(85 - 8) / 8] x 100
Subtract the new number by the original number
85 - 8 = 77
77 ÷ 8 = 9.625
9.625 x 100 = 962.5%
Example