-87.11% is the change from 993 to 128
Calculation steps:
[( 128 - 993 ) ÷ 993] x 100 = -87.11%
Formula
Percentage change = [(128 - 993) / 993] x 100
Subtract the new number by the original number
128 - 993 = -865
-865 ÷ 993 = -0.8710976837865055
-0.8710976837865055 x 100 = -87.11%