-12.99% is the change from 993 to 864
Calculation steps:
[( 864 - 993 ) ÷ 993] x 100 = -12.99%
Formula
Percentage change = [(864 - 993) / 993] x 100
Subtract the new number by the original number
864 - 993 = -129
-129 ÷ 993 = -0.1299093655589124
-0.1299093655589124 x 100 = -12.99%