-39.57% is the change from 561 to 339
Calculation steps:
[( 339 - 561 ) ÷ 561] x 100 = -39.57%
Formula
Percentage change = [(339 - 561) / 561] x 100
Subtract the new number by the original number
339 - 561 = -222
-222 ÷ 561 = -0.39572192513368987
-0.39572192513368987 x 100 = -39.57%