-98.44% is the change from 963 to 15
Calculation steps:
[( 15 - 963 ) ÷ 963] x 100 = -98.44%
Formula
Percentage change = [(15 - 963) / 963] x 100
Subtract the new number by the original number
15 - 963 = -948
-948 ÷ 963 = -0.9844236760124611
-0.9844236760124611 x 100 = -98.44%