3840% is the change from 10 to 394
Calculation steps:
[( 394 - 10 ) ÷ 10] x 100 = 3840%
Formula
Percentage change = [(394 - 10) / 10] x 100
Subtract the new number by the original number
394 - 10 = 384
384 ÷ 10 = 38.4
38.4 x 100 = 3840%
Example