-3.4% is the change from 559 to 540
Calculation steps:
[( 540 - 559 ) ÷ 559] x 100 = -3.4%
Formula
Percentage change = [(540 - 559) / 559] x 100
Subtract the new number by the original number
540 - 559 = -19
-19 ÷ 559 = -0.03398926654740608
-0.03398926654740608 x 100 = -3.4%