662.5% is the change from 8 to 61
Calculation steps:
[( 61 - 8 ) ÷ 8] x 100 = 662.5%
Formula
Percentage change = [(61 - 8) / 8] x 100
Subtract the new number by the original number
61 - 8 = 53
53 ÷ 8 = 6.625
6.625 x 100 = 662.5%
Example