-98.48% is the change from 987 to 15
Calculation steps:
[( 15 - 987 ) ÷ 987] x 100 = -98.48%
Formula
Percentage change = [(15 - 987) / 987] x 100
Subtract the new number by the original number
15 - 987 = -972
-972 ÷ 987 = -0.9848024316109423
-0.9848024316109423 x 100 = -98.48%