-30.6% is the change from 268 to 186
Calculation steps:
[( 186 - 268 ) ÷ 268] x 100 = -30.6%
Formula
Percentage change = [(186 - 268) / 268] x 100
Subtract the new number by the original number
186 - 268 = -82
-82 ÷ 268 = -0.30597014925373134
-0.30597014925373134 x 100 = -30.6%