-39.58% is the change from 566 to 342
Calculation steps:
[( 342 - 566 ) ÷ 566] x 100 = -39.58%
Formula
Percentage change = [(342 - 566) / 566] x 100
Subtract the new number by the original number
342 - 566 = -224
-224 ÷ 566 = -0.3957597173144876
-0.3957597173144876 x 100 = -39.58%