-4.35% is the change from 919 to 879
Calculation steps:
[( 879 - 919 ) ÷ 919] x 100 = -4.35%
Formula
Percentage change = [(879 - 919) / 919] x 100
Subtract the new number by the original number
879 - 919 = -40
-40 ÷ 919 = -0.04352557127312296
-0.04352557127312296 x 100 = -4.35%