-10.38% is the change from 963 to 863
Calculation steps:
[( 863 - 963 ) ÷ 963] x 100 = -10.38%
Formula
Percentage change = [(863 - 963) / 963] x 100
Subtract the new number by the original number
863 - 963 = -100
-100 ÷ 963 = -0.10384215991692627
-0.10384215991692627 x 100 = -10.38%