-25.79% is the change from 221 to 164
Calculation steps:
[( 164 - 221 ) ÷ 221] x 100 = -25.79%
Formula
Percentage change = [(164 - 221) / 221] x 100
Subtract the new number by the original number
164 - 221 = -57
-57 ÷ 221 = -0.2579185520361991
-0.2579185520361991 x 100 = -25.79%