-1.78% is the change from 561 to 551
Calculation steps:
[( 551 - 561 ) ÷ 561] x 100 = -1.78%
Formula
Percentage change = [(551 - 561) / 561] x 100
Subtract the new number by the original number
551 - 561 = -10
-10 ÷ 561 = -0.017825311942959002
-0.017825311942959002 x 100 = -1.78%