-96.58% is the change from 555 to 19
Calculation steps:
[( 19 - 555 ) ÷ 555] x 100 = -96.58%
Formula
Percentage change = [(19 - 555) / 555] x 100
Subtract the new number by the original number
19 - 555 = -536
-536 ÷ 555 = -0.9657657657657658
-0.9657657657657658 x 100 = -96.58%