228.21% is the change from 78 to 256
Calculation steps:
[( 256 - 78 ) ÷ 78] x 100 = 228.21%
Formula
Percentage change = [(256 - 78) / 78] x 100
Subtract the new number by the original number
256 - 78 = 178
178 ÷ 78 = 2.282051282051282
2.282051282051282 x 100 = 228.21%