6837.5% is the change from 8 to 555
Calculation steps:
[( 555 - 8 ) ÷ 8] x 100 = 6837.5%
Formula
Percentage change = [(555 - 8) / 8] x 100
Subtract the new number by the original number
555 - 8 = 547
547 ÷ 8 = 68.375
68.375 x 100 = 6837.5%
Example