-6.53% is the change from 551 to 515
Calculation steps:
[( 515 - 551 ) ÷ 551] x 100 = -6.53%
Formula
Percentage change = [(515 - 551) / 551] x 100
Subtract the new number by the original number
515 - 551 = -36
-36 ÷ 551 = -0.06533575317604355
-0.06533575317604355 x 100 = -6.53%