1213.33% is the change from 30 to 394
Calculation steps:
[( 394 - 30 ) ÷ 30] x 100 = 1213.33%
Formula
Percentage change = [(394 - 30) / 30] x 100
Subtract the new number by the original number
394 - 30 = 364
364 ÷ 30 = 12.133333333333333
12.133333333333333 x 100 = 1213.33%