-43% is the change from 879 to 501
Calculation steps:
[( 501 - 879 ) ÷ 879] x 100 = -43%
Formula
Percentage change = [(501 - 879) / 879] x 100
Subtract the new number by the original number
501 - 879 = -378
-378 ÷ 879 = -0.4300341296928328
-0.4300341296928328 x 100 = -43%