-1.98% is the change from 556 to 545
Calculation steps:
[( 545 - 556 ) ÷ 556] x 100 = -1.98%
Formula
Percentage change = [(545 - 556) / 556] x 100
Subtract the new number by the original number
545 - 556 = -11
-11 ÷ 556 = -0.019784172661870502
-0.019784172661870502 x 100 = -1.98%