-90.2% is the change from 551 to 54
Calculation steps:
[( 54 - 551 ) ÷ 551] x 100 = -90.2%
Formula
Percentage change = [(54 - 551) / 551] x 100
Subtract the new number by the original number
54 - 551 = -497
-497 ÷ 551 = -0.9019963702359347
-0.9019963702359347 x 100 = -90.2%