-99.64% is the change from 551 to 2
Calculation steps:
[( 2 - 551 ) ÷ 551] x 100 = -99.64%
Formula
Percentage change = [(2 - 551) / 551] x 100
Subtract the new number by the original number
2 - 551 = -549
-549 ÷ 551 = -0.9963702359346642
-0.9963702359346642 x 100 = -99.64%