-12.26% is the change from 987 to 866
Calculation steps:
[( 866 - 987 ) ÷ 987] x 100 = -12.26%
Formula
Percentage change = [(866 - 987) / 987] x 100
Subtract the new number by the original number
866 - 987 = -121
-121 ÷ 987 = -0.12259371833839919
-0.12259371833839919 x 100 = -12.26%