-25.37% is the change from 867 to 647
Calculation steps:
[( 647 - 867 ) ÷ 867] x 100 = -25.37%
Formula
Percentage change = [(647 - 867) / 867] x 100
Subtract the new number by the original number
647 - 867 = -220
-220 ÷ 867 = -0.2537485582468281
-0.2537485582468281 x 100 = -25.37%