-31.34% is the change from 820 to 563
Calculation steps:
[( 563 - 820 ) ÷ 820] x 100 = -31.34%
Formula
Percentage change = [(563 - 820) / 820] x 100
Subtract the new number by the original number
563 - 820 = -257
-257 ÷ 820 = -0.31341463414634146
-0.31341463414634146 x 100 = -31.34%