-42.08% is the change from 221 to 128
Calculation steps:
[( 128 - 221 ) ÷ 221] x 100 = -42.08%
Formula
Percentage change = [(128 - 221) / 221] x 100
Subtract the new number by the original number
128 - 221 = -93
-93 ÷ 221 = -0.42081447963800905
-0.42081447963800905 x 100 = -42.08%