4000% is the change from 9 to 369
Calculation steps:
[( 369 - 9 ) ÷ 9] x 100 = 4000%
Formula
Percentage change = [(369 - 9) / 9] x 100
Subtract the new number by the original number
369 - 9 = 360
360 ÷ 9 = 40
40 x 100 = 4000%
Example