-12.13% is the change from 305 to 268
Calculation steps:
[( 268 - 305 ) ÷ 305] x 100 = -12.13%
Formula
Percentage change = [(268 - 305) / 305] x 100
Subtract the new number by the original number
268 - 305 = -37
-37 ÷ 305 = -0.12131147540983607
-0.12131147540983607 x 100 = -12.13%