-98.44% is the change from 964 to 15
Calculation steps:
[( 15 - 964 ) ÷ 964] x 100 = -98.44%
Formula
Percentage change = [(15 - 964) / 964] x 100
Subtract the new number by the original number
15 - 964 = -949
-949 ÷ 964 = -0.9844398340248963
-0.9844398340248963 x 100 = -98.44%