1150% is the change from 34 to 425
Calculation steps:
[( 425 - 34 ) ÷ 34] x 100 = 1150%
Formula
Percentage change = [(425 - 34) / 34] x 100
Subtract the new number by the original number
425 - 34 = 391
391 ÷ 34 = 11.5
11.5 x 100 = 1150%
Example