-92.71% is the change from 878 to 64
Calculation steps:
[( 64 - 878 ) ÷ 878] x 100 = -92.71%
Formula
Percentage change = [(64 - 878) / 878] x 100
Subtract the new number by the original number
64 - 878 = -814
-814 ÷ 878 = -0.9271070615034168
-0.9271070615034168 x 100 = -92.71%