-63.8% is the change from 221 to 80
Calculation steps:
[( 80 - 221 ) ÷ 221] x 100 = -63.8%
Formula
Percentage change = [(80 - 221) / 221] x 100
Subtract the new number by the original number
80 - 221 = -141
-141 ÷ 221 = -0.6380090497737556
-0.6380090497737556 x 100 = -63.8%