82.86% is the change from 140 to 256
Calculation steps:
[( 256 - 140 ) ÷ 140] x 100 = 82.86%
Formula
Percentage change = [(256 - 140) / 140] x 100
Subtract the new number by the original number
256 - 140 = 116
116 ÷ 140 = 0.8285714285714286
0.8285714285714286 x 100 = 82.86%