256% is the change from 50 to 178
Calculation steps:
[( 178 - 50 ) ÷ 50] x 100 = 256%
Formula
Percentage change = [(178 - 50) / 50] x 100
Subtract the new number by the original number
178 - 50 = 128
128 ÷ 50 = 2.56
2.56 x 100 = 256%
Example