-17.54% is the change from 268 to 221
Calculation steps:
[( 221 - 268 ) ÷ 268] x 100 = -17.54%
Formula
Percentage change = [(221 - 268) / 268] x 100
Subtract the new number by the original number
221 - 268 = -47
-47 ÷ 268 = -0.17537313432835822
-0.17537313432835822 x 100 = -17.54%