411.54% is the change from 78 to 399
Calculation steps:
[( 399 - 78 ) ÷ 78] x 100 = 411.54%
Formula
Percentage change = [(399 - 78) / 78] x 100
Subtract the new number by the original number
399 - 78 = 321
321 ÷ 78 = 4.115384615384615
4.115384615384615 x 100 = 411.54%