-86.99% is the change from 984 to 128
Calculation steps:
[( 128 - 984 ) ÷ 984] x 100 = -86.99%
Formula
Percentage change = [(128 - 984) / 984] x 100
Subtract the new number by the original number
128 - 984 = -856
-856 ÷ 984 = -0.8699186991869918
-0.8699186991869918 x 100 = -86.99%