-92.28% is the change from 829 to 64
Calculation steps:
[( 64 - 829 ) ÷ 829] x 100 = -92.28%
Formula
Percentage change = [(64 - 829) / 829] x 100
Subtract the new number by the original number
64 - 829 = -765
-765 ÷ 829 = -0.9227985524728589
-0.9227985524728589 x 100 = -92.28%