-80.1% is the change from 392 to 78
Calculation steps:
[( 78 - 392 ) ÷ 392] x 100 = -80.1%
Formula
Percentage change = [(78 - 392) / 392] x 100
Subtract the new number by the original number
78 - 392 = -314
-314 ÷ 392 = -0.8010204081632653
-0.8010204081632653 x 100 = -80.1%