3183.33% is the change from 12 to 394
Calculation steps:
[( 394 - 12 ) ÷ 12] x 100 = 3183.33%
Formula
Percentage change = [(394 - 12) / 12] x 100
Subtract the new number by the original number
394 - 12 = 382
382 ÷ 12 = 31.833333333333332
31.833333333333332 x 100 = 3183.33%