-10.8% is the change from 611 to 545
Calculation steps:
[( 545 - 611 ) ÷ 611] x 100 = -10.8%
Formula
Percentage change = [(545 - 611) / 611] x 100
Subtract the new number by the original number
545 - 611 = -66
-66 ÷ 611 = -0.10801963993453355
-0.10801963993453355 x 100 = -10.8%