-80.33% is the change from 427 to 84
Calculation steps:
[( 84 - 427 ) ÷ 427] x 100 = -80.33%
Formula
Percentage change = [(84 - 427) / 427] x 100
Subtract the new number by the original number
84 - 427 = -343
-343 ÷ 427 = -0.8032786885245902
-0.8032786885245902 x 100 = -80.33%