13200% is the change from 3 to 399
Calculation steps:
[( 399 - 3 ) ÷ 3] x 100 = 13200%
Formula
Percentage change = [(399 - 3) / 3] x 100
Subtract the new number by the original number
399 - 3 = 396
396 ÷ 3 = 132
132 x 100 = 13200%
Example