871.43% is the change from 42 to 408
Calculation steps:
[( 408 - 42 ) ÷ 42] x 100 = 871.43%
Formula
Percentage change = [(408 - 42) / 42] x 100
Subtract the new number by the original number
408 - 42 = 366
366 ÷ 42 = 8.714285714285714
8.714285714285714 x 100 = 871.43%