10400% is the change from 9 to 945
Calculation steps:
[( 945 - 9 ) ÷ 9] x 100 = 10400%
Formula
Percentage change = [(945 - 9) / 9] x 100
Subtract the new number by the original number
945 - 9 = 936
936 ÷ 9 = 104
104 x 100 = 10400%
Example