-86.51% is the change from 993 to 134
Calculation steps:
[( 134 - 993 ) ÷ 993] x 100 = -86.51%
Formula
Percentage change = [(134 - 993) / 993] x 100
Subtract the new number by the original number
134 - 993 = -859
-859 ÷ 993 = -0.865055387713998
-0.865055387713998 x 100 = -86.51%