-34.35% is the change from 987 to 648
Calculation steps:
[( 648 - 987 ) ÷ 987] x 100 = -34.35%
Formula
Percentage change = [(648 - 987) / 987] x 100
Subtract the new number by the original number
648 - 987 = -339
-339 ÷ 987 = -0.3434650455927052
-0.3434650455927052 x 100 = -34.35%