-90.71% is the change from 829 to 77
Calculation steps:
[( 77 - 829 ) ÷ 829] x 100 = -90.71%
Formula
Percentage change = [(77 - 829) / 829] x 100
Subtract the new number by the original number
77 - 829 = -752
-752 ÷ 829 = -0.9071170084439083
-0.9071170084439083 x 100 = -90.71%