51.48% is the change from 169 to 256
Calculation steps:
[( 256 - 169 ) ÷ 169] x 100 = 51.48%
Formula
Percentage change = [(256 - 169) / 169] x 100
Subtract the new number by the original number
256 - 169 = 87
87 ÷ 169 = 0.514792899408284
0.514792899408284 x 100 = 51.48%