84.38% is the change from 256 to 472
Calculation steps:
[( 472 - 256 ) ÷ 256] x 100 = 84.38%
Formula
Percentage change = [(472 - 256) / 256] x 100
Subtract the new number by the original number
472 - 256 = 216
216 ÷ 256 = 0.84375
0.84375 x 100 = 84.38%