-98.74% is the change from 555 to 7
Calculation steps:
[( 7 - 555 ) ÷ 555] x 100 = -98.74%
Formula
Percentage change = [(7 - 555) / 555] x 100
Subtract the new number by the original number
7 - 555 = -548
-548 ÷ 555 = -0.9873873873873874
-0.9873873873873874 x 100 = -98.74%