864.29% is the change from 42 to 405
Calculation steps:
[( 405 - 42 ) ÷ 42] x 100 = 864.29%
Formula
Percentage change = [(405 - 42) / 42] x 100
Subtract the new number by the original number
405 - 42 = 363
363 ÷ 42 = 8.642857142857142
8.642857142857142 x 100 = 864.29%