-5.63% is the change from 551 to 520
Calculation steps:
[( 520 - 551 ) ÷ 551] x 100 = -5.63%
Formula
Percentage change = [(520 - 551) / 551] x 100
Subtract the new number by the original number
520 - 551 = -31
-31 ÷ 551 = -0.056261343012704176
-0.056261343012704176 x 100 = -5.63%