-71.49% is the change from 221 to 63
Calculation steps:
[( 63 - 221 ) ÷ 221] x 100 = -71.49%
Formula
Percentage change = [(63 - 221) / 221] x 100
Subtract the new number by the original number
63 - 221 = -158
-158 ÷ 221 = -0.7149321266968326
-0.7149321266968326 x 100 = -71.49%