1000% is the change from 42 to 462
Calculation steps:
[( 462 - 42 ) ÷ 42] x 100 = 1000%
Formula
Percentage change = [(462 - 42) / 42] x 100
Subtract the new number by the original number
462 - 42 = 420
420 ÷ 42 = 10
10 x 100 = 1000%
Example