84.77% is the change from 256 to 473
Calculation steps:
[( 473 - 256 ) ÷ 256] x 100 = 84.77%
Formula
Percentage change = [(473 - 256) / 256] x 100
Subtract the new number by the original number
473 - 256 = 217
217 ÷ 256 = 0.84765625
0.84765625 x 100 = 84.77%