1283.33% is the change from 30 to 415
Calculation steps:
[( 415 - 30 ) ÷ 30] x 100 = 1283.33%
Formula
Percentage change = [(415 - 30) / 30] x 100
Subtract the new number by the original number
415 - 30 = 385
385 ÷ 30 = 12.833333333333334
12.833333333333334 x 100 = 1283.33%