412% is the change from 50 to 256
Calculation steps:
[( 256 - 50 ) ÷ 50] x 100 = 412%
Formula
Percentage change = [(256 - 50) / 50] x 100
Subtract the new number by the original number
256 - 50 = 206
206 ÷ 50 = 4.12
4.12 x 100 = 412%
Example