-36.63% is the change from 879 to 557
Calculation steps:
[( 557 - 879 ) ÷ 879] x 100 = -36.63%
Formula
Percentage change = [(557 - 879) / 879] x 100
Subtract the new number by the original number
557 - 879 = -322
-322 ÷ 879 = -0.366325369738339
-0.366325369738339 x 100 = -36.63%