7837.5% is the change from 8 to 635
Calculation steps:
[( 635 - 8 ) ÷ 8] x 100 = 7837.5%
Formula
Percentage change = [(635 - 8) / 8] x 100
Subtract the new number by the original number
635 - 8 = 627
627 ÷ 8 = 78.375
78.375 x 100 = 7837.5%
Example