-96.37% is the change from 551 to 20
Calculation steps:
[( 20 - 551 ) ÷ 551] x 100 = -96.37%
Formula
Percentage change = [(20 - 551) / 551] x 100
Subtract the new number by the original number
20 - 551 = -531
-531 ÷ 551 = -0.9637023593466425
-0.9637023593466425 x 100 = -96.37%