-38% is the change from 879 to 545
Calculation steps:
[( 545 - 879 ) ÷ 879] x 100 = -38%
Formula
Percentage change = [(545 - 879) / 879] x 100
Subtract the new number by the original number
545 - 879 = -334
-334 ÷ 879 = -0.3799772468714448
-0.3799772468714448 x 100 = -38%