-40.67% is the change from 268 to 159
Calculation steps:
[( 159 - 268 ) ÷ 268] x 100 = -40.67%
Formula
Percentage change = [(159 - 268) / 268] x 100
Subtract the new number by the original number
159 - 268 = -109
-109 ÷ 268 = -0.40671641791044777
-0.40671641791044777 x 100 = -40.67%