-55.35% is the change from 878 to 392
Calculation steps:
[( 392 - 878 ) ÷ 878] x 100 = -55.35%
Formula
Percentage change = [(392 - 878) / 878] x 100
Subtract the new number by the original number
392 - 878 = -486
-486 ÷ 878 = -0.5535307517084282
-0.5535307517084282 x 100 = -55.35%