-5.99% is the change from 551 to 518
Calculation steps:
[( 518 - 551 ) ÷ 551] x 100 = -5.99%
Formula
Percentage change = [(518 - 551) / 551] x 100
Subtract the new number by the original number
518 - 551 = -33
-33 ÷ 551 = -0.05989110707803993
-0.05989110707803993 x 100 = -5.99%