-20.32% is the change from 566 to 451
Calculation steps:
[( 451 - 566 ) ÷ 566] x 100 = -20.32%
Formula
Percentage change = [(451 - 566) / 566] x 100
Subtract the new number by the original number
451 - 566 = -115
-115 ÷ 566 = -0.20318021201413428
-0.20318021201413428 x 100 = -20.32%