4100% is the change from 10 to 420
Calculation steps:
[( 420 - 10 ) ÷ 10] x 100 = 4100%
Formula
Percentage change = [(420 - 10) / 10] x 100
Subtract the new number by the original number
420 - 10 = 410
410 ÷ 10 = 41
41 x 100 = 4100%
Example