687.5% is the change from 8 to 63
Calculation steps:
[( 63 - 8 ) ÷ 8] x 100 = 687.5%
Formula
Percentage change = [(63 - 8) / 8] x 100
Subtract the new number by the original number
63 - 8 = 55
55 ÷ 8 = 6.875
6.875 x 100 = 687.5%
Example