840.48% is the change from 42 to 395
Calculation steps:
[( 395 - 42 ) ÷ 42] x 100 = 840.48%
Formula
Percentage change = [(395 - 42) / 42] x 100
Subtract the new number by the original number
395 - 42 = 353
353 ÷ 42 = 8.404761904761905
8.404761904761905 x 100 = 840.48%