-93.55% is the change from 993 to 64
Calculation steps:
[( 64 - 993 ) ÷ 993] x 100 = -93.55%
Formula
Percentage change = [(64 - 993) / 993] x 100
Subtract the new number by the original number
64 - 993 = -929
-929 ÷ 993 = -0.9355488418932527
-0.9355488418932527 x 100 = -93.55%