-91.89% is the change from 987 to 80
Calculation steps:
[( 80 - 987 ) ÷ 987] x 100 = -91.89%
Formula
Percentage change = [(80 - 987) / 987] x 100
Subtract the new number by the original number
80 - 987 = -907
-907 ÷ 987 = -0.9189463019250254
-0.9189463019250254 x 100 = -91.89%