-1.45% is the change from 551 to 543
Calculation steps:
[( 543 - 551 ) ÷ 551] x 100 = -1.45%
Formula
Percentage change = [(543 - 551) / 551] x 100
Subtract the new number by the original number
543 - 551 = -8
-8 ÷ 551 = -0.014519056261343012
-0.014519056261343012 x 100 = -1.45%