-14.99% is the change from 987 to 839
Calculation steps:
[( 839 - 987 ) ÷ 987] x 100 = -14.99%
Formula
Percentage change = [(839 - 987) / 987] x 100
Subtract the new number by the original number
839 - 987 = -148
-148 ÷ 987 = -0.14994934143870314
-0.14994934143870314 x 100 = -14.99%