-2.66% is the change from 263 to 256
Calculation steps:
[( 256 - 263 ) ÷ 263] x 100 = -2.66%
Formula
Percentage change = [(256 - 263) / 263] x 100
Subtract the new number by the original number
256 - 263 = -7
-7 ÷ 263 = -0.026615969581749048
-0.026615969581749048 x 100 = -2.66%