945.24% is the change from 42 to 439
Calculation steps:
[( 439 - 42 ) ÷ 42] x 100 = 945.24%
Formula
Percentage change = [(439 - 42) / 42] x 100
Subtract the new number by the original number
439 - 42 = 397
397 ÷ 42 = 9.452380952380953
9.452380952380953 x 100 = 945.24%