-30.6% is the change from 817 to 567
Calculation steps:
[( 567 - 817 ) ÷ 817] x 100 = -30.6%
Formula
Percentage change = [(567 - 817) / 817] x 100
Subtract the new number by the original number
567 - 817 = -250
-250 ÷ 817 = -0.30599755201958384
-0.30599755201958384 x 100 = -30.6%