-7.9% is the change from 987 to 909
Calculation steps:
[( 909 - 987 ) ÷ 987] x 100 = -7.9%
Formula
Percentage change = [(909 - 987) / 987] x 100
Subtract the new number by the original number
909 - 987 = -78
-78 ÷ 987 = -0.0790273556231003
-0.0790273556231003 x 100 = -7.9%