-80.65% is the change from 398 to 77
Calculation steps:
[( 77 - 398 ) ÷ 398] x 100 = -80.65%
Formula
Percentage change = [(77 - 398) / 398] x 100
Subtract the new number by the original number
77 - 398 = -321
-321 ÷ 398 = -0.8065326633165829
-0.8065326633165829 x 100 = -80.65%