-80.54% is the change from 406 to 79
Calculation steps:
[( 79 - 406 ) ÷ 406] x 100 = -80.54%
Formula
Percentage change = [(79 - 406) / 406] x 100
Subtract the new number by the original number
79 - 406 = -327
-327 ÷ 406 = -0.8054187192118226
-0.8054187192118226 x 100 = -80.54%