-23.98% is the change from 221 to 168
Calculation steps:
[( 168 - 221 ) ÷ 221] x 100 = -23.98%
Formula
Percentage change = [(168 - 221) / 221] x 100
Subtract the new number by the original number
168 - 221 = -53
-53 ÷ 221 = -0.2398190045248869
-0.2398190045248869 x 100 = -23.98%