-41.63% is the change from 221 to 129
Calculation steps:
[( 129 - 221 ) ÷ 221] x 100 = -41.63%
Formula
Percentage change = [(129 - 221) / 221] x 100
Subtract the new number by the original number
129 - 221 = -92
-92 ÷ 221 = -0.416289592760181
-0.416289592760181 x 100 = -41.63%