2460% is the change from 10 to 256
Calculation steps:
[( 256 - 10 ) ÷ 10] x 100 = 2460%
Formula
Percentage change = [(256 - 10) / 10] x 100
Subtract the new number by the original number
256 - 10 = 246
246 ÷ 10 = 24.6
24.6 x 100 = 2460%
Example