1037.5% is the change from 8 to 91
Calculation steps:
[( 91 - 8 ) ÷ 8] x 100 = 1037.5%
Formula
Percentage change = [(91 - 8) / 8] x 100
Subtract the new number by the original number
91 - 8 = 83
83 ÷ 8 = 10.375
10.375 x 100 = 1037.5%
Example