-11.62% is the change from 611 to 540
Calculation steps:
[( 540 - 611 ) ÷ 611] x 100 = -11.62%
Formula
Percentage change = [(540 - 611) / 611] x 100
Subtract the new number by the original number
540 - 611 = -71
-71 ÷ 611 = -0.11620294599018004
-0.11620294599018004 x 100 = -11.62%