-79.66% is the change from 408 to 83
Calculation steps:
[( 83 - 408 ) ÷ 408] x 100 = -79.66%
Formula
Percentage change = [(83 - 408) / 408] x 100
Subtract the new number by the original number
83 - 408 = -325
-325 ÷ 408 = -0.7965686274509803
-0.7965686274509803 x 100 = -79.66%