-99.7% is the change from 987 to 3
Calculation steps:
[( 3 - 987 ) ÷ 987] x 100 = -99.7%
Formula
Percentage change = [(3 - 987) / 987] x 100
Subtract the new number by the original number
3 - 987 = -984
-984 ÷ 987 = -0.9969604863221885
-0.9969604863221885 x 100 = -99.7%