-42.96% is the change from 561 to 320
Calculation steps:
[( 320 - 561 ) ÷ 561] x 100 = -42.96%
Formula
Percentage change = [(320 - 561) / 561] x 100
Subtract the new number by the original number
320 - 561 = -241
-241 ÷ 561 = -0.4295900178253119
-0.4295900178253119 x 100 = -42.96%