-31.64% is the change from 847 to 579
Calculation steps:
[( 579 - 847 ) ÷ 847] x 100 = -31.64%
Formula
Percentage change = [(579 - 847) / 847] x 100
Subtract the new number by the original number
579 - 847 = -268
-268 ÷ 847 = -0.31641086186540734
-0.31641086186540734 x 100 = -31.64%