1350% is the change from 42 to 609
Calculation steps:
[( 609 - 42 ) ÷ 42] x 100 = 1350%
Formula
Percentage change = [(609 - 42) / 42] x 100
Subtract the new number by the original number
609 - 42 = 567
567 ÷ 42 = 13.5
13.5 x 100 = 1350%
Example