-81.28% is the change from 406 to 76
Calculation steps:
[( 76 - 406 ) ÷ 406] x 100 = -81.28%
Formula
Percentage change = [(76 - 406) / 406] x 100
Subtract the new number by the original number
76 - 406 = -330
-330 ÷ 406 = -0.812807881773399
-0.812807881773399 x 100 = -81.28%